BDMAEE

1,2-Dichlorobenzene 1,2-Dichlorobenzene
Published by BDMAEE on | Permalink

1,2-Dichlorobenzene Structural Formula

Structural formula

Business number 0297
Molecular formula C6H4Cl2
Molecular weight 147.00
label

o-Dichlorobenzene,

o-Dichlorobenzene,

Aromatic halogen derivatives,

Liquid crystal materials and intermediates

Numbering system

CAS number:95-50-1

MDL number:MFCD00000535

EINECS number:202-425-9

RTECS number:CZ4500000

BRN number:606078

PubChem number:24854428

Physical property data

1. Properties: Colorless and volatile liquid with aromatic smell. [1]

2. Melting point (℃): -17.5[2]

3. Boiling point (℃): 180.4[3]

4. Relative density (water = 1): 1.30[4]

5. Relative vapor Density (air=1): 5.05[5]

6. Saturated vapor pressure (kPa): 0.133 (20℃)[6]

7. Heat of combustion (kJ/mol): -2725.38[7]

8. Critical temperature (℃): 417.2[8]

9. Critical pressure (MPa): 4.03[9]

10. Octanol/water partition coefficient: 3.43 [10]

11. Flash point (℃): 66 (CC); 68 (OC) [11]

12. Ignition temperature (℃): 647[12]

13. Explosion limit (%): 9.2[13]

14. Lower explosion limit (%): 2[14]

15. Solubility: insoluble in water, soluble in most organic solvents such as ethanol, ether, and benzene. [15]

16. Viscosity (mPa·s, 25ºC): 1.324

17. Flash point (ºC, closed): 66.1

18. Flash point (ºC, open): 73.9

19. Fire point (ºC): 648

20. Heat of vaporization (KJ/mol, b.p.): 39.69

21. Heat of fusion (KJ/mol): 12.60

22. Heat of formation (KJ/mol): 18.42

23. Heat of combustion (KJ/ mol, 25ºC, liquid): 2964.13

24. Specific heat capacity (KJ/(kg·K), 0ºC, liquid): 1.13

25. Electrical conductivity (S/m, 25ºC ): 3×10-11

26. Solubility (%, water, 20ºC): 0.0134

27. Volume expansion coefficient (K -1, 20ºC): 0.00085

28. Relative density (25℃, 4℃): 1.3007

29. Refractive index at room temperature (n25): 1.527870

30. Solubility parameter (J·cm-3)0.5: 20.311

31.van der Waals area (cm2·mol-1): 8.220×109

32. van der Waals volume (cm3·mol-1): 87.300

33. Liquid phase standard claims heat (enthalpy )( kJ·mol-1): -17.5

34. Liquid phase standard hot melt (J·mol-1·K -1): 170.9

35. The gas phase standard claims heat (enthalpy) (kJ·mol-1): 30.2

36. Gas phase standard entropy (J·mol-1·K-1): 341.96

37. Gas phase standard formation free energy (kJ·mol-1): 83.0

38. Gas phase standard hot melt (J·mol-1·K-1): 113.43

Toxicological data

1. Acute toxicity:

Mouse oral LC5O: 4386mg/kg; rat oral LD50: 500mg/kg; rabbit

1. Recycling of chlorobenzene by-products Whether chlorobenzene is produced using the benzene liquid-phase chlorination method or the benzene gas-phase oxychlorination method, dichlorobenzene is co-produced. According to the actual demand, the production ratio of monochlorobenzene and dichlorobenzene can be adjusted by changing the chlorination process conditions. According to the current process control conditions and production conditions of chlorobenzene, the ratio of chlorobenzene to dichlorobenzene is 30-35:1. The industrial methods for separating o- and para-dichlorobenzene mainly include distillation and crystallization.

2. From o-chloroaniline via Obtained by diazotization and substitution. Add o-chloroaniline and hydrochloric acid to the reaction pot and mix evenly below 25°C. Cool to 0°C, add sodium nitrite solution dropwise, keep the temperature at 0-5°C, stop adding when the potassium iodide starch solution turns blue, and obtain a diazonium salt solution. Add cuprous chloride to the hydrochloric acid solution at 0 to 5°C, stir and mix thoroughly, raise the temperature to 60 to 70°C, react for 1 hour, cool and let stand for layering, and repeatedly add 5% sodium hydroxide and water to the oil layer. Wash, dehydrate with anhydrous calcium chloride, fractionate, and collect the 177-183°C fraction to obtain the finished product.

Purpose

1. It can be used as a solvent for wax, gum, resin, tar, rubber, oil and asphalt, etc., and is used in the production of dyes Shilin black and Shilin yellow brown, high-grade pigments, the drug chlorhexidine, and polyurethane raw material TDI. The solvent o-dichlorobenzene is used. This product can be used as an insecticide for termites, locusts, and borers. It can be used in the production of triclofenac, thorastrobin, and Xinyanling. It can also be used in the synthesis of catechol, fluorochloroaniline, 3,4 -Dichloroaniline and o-phenylenediamine. As an anti-rust agent and degreaser, it can remove carbon and lead from engine parts, remove coatings on metal surfaces without corroding the metal, and remove sulfur from lighting gases.

2. It can be used as an ingredient in metal polishing agents; in the dye industry, it is also used to make vat blue CLB and vat blue CLG; polymer wet spinning solvent to reduce fiber thermal shrinkage; epoxy resin dilution Agent, coolant, heat exchange medium; pharmaceutical long-acting sulfa, etc.

3. It has strong dissolving ability, good permeability and slow evaporation rate, so it is used as an additive for nitrocellulose spray paint and varnish and a solvent for wax and tar. Also used as a degreasing agent in the metal, leather, automotive, and aircraft industries. A mixture with a small amount of higher alcohol is used as a rust inhibitor. Others are also used as intermediates and organic heat carriers in the manufacture of refrigerants, pesticides, fumigants, preservatives, dyes, medicines, etc.

4. Used in organic synthesis, dye manufacturing, cleaning agents, and solvents. Also used in the preparation of pesticides, cleaning agents and solvents.

5. It is widely used as a solvent and preservative for organic matter and non-ferrous metal oxides, and also as a pesticide. [31]

1,5-Dichloroanthraquinone 1,5-Dichloroanthraquinone
Published by BDMAEE on | Permalink
1,5-Dichloroanthraquinone structural formula

1,5-Dichloroanthraquinone structural formula

Structural formula

Business number 01SZ
Molecular formula C14H6Cl2O2
Molecular weight 277.1
label

None

Numbering system

CAS number:82-46-2

MDL number:MFCD00001190

EINECS number:201-424-0

RTECS number:CB6495000

BRN number:402592

PubChem number:24893947

Physical property data

1. Character: yellow crystal

2. Density (g/mL, 25/4℃): Uncertain

3. Relative vapor density (g/mL, air =1): Uncertain

4. Melting point (ºC): 245

5. Boiling point (ºC, normal pressure): Uncertain

6. Boiling point (ºC, 5.2kPa): Uncertain

7. Refractive index: Uncertain

8. Flash point (ºC): Uncertain

9. Ratio Optical rotation (º): Uncertain

10. Autoignition point or ignition temperature (ºC): Uncertain

11. Vapor pressure (kPa, 25ºC): Uncertain

p>

12. Saturated vapor pressure (kPa, 60ºC): Uncertain

13. Heat of combustion (KJ/mol): Uncertain

14. Critical temperature (ºC ): Uncertain

15. Critical pressure (KPa): Uncertain

16. Log value of oil-water (octanol/water) partition coefficient: Uncertain

17. Explosion upper limit (%, V/V): Uncertain

18. Explosion lower limit (%, V/V): Uncertain

19. Solubility: soluble Insoluble in nitrobenzene, anisole and benzyl alcohol, insoluble in alcohol, acetic acid, benzene and toluene.

Toxicological data

Neurotoxicity: Rabbit eye test: 500 mg/24HREACTION;

Ecological data

None

Molecular structure data

1. Molar refractive index: 68.45

2. Molar volume (cm3/mol): 182.9

3. Isotonic specific volume (90.2K): 509.1

4. Surface tension (dyne/cm): 59.9

5. Polarizability (10-24cm3): 27.13

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 4.1

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: None

6. Topological molecule polar surface area34.1

7. Number of heavy atoms: 18

8. Surface charge: 0

9. Complexity: 346

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine Number of stereocenters of chemical bonds: 0

14. Number of stereocenters of uncertain chemical bonds: 0

15. Number of covalent bond units: 1

Properties and stability

None

Storage method

Stored sealed and protected from light.

Synthesis method

The chlorination method is mainly used, using sodium 1,5-anthraquinone disulfonate as the raw material, adding sodium chlorate to the hydrochloric acid solution for chlorination reaction, and then filtering, washing and drying it.

First add water and anthraquinone-1,5-disulfonic acid sodium salt into the reaction kettle, stir well, then add 30% hydrochloric acid, raise the temperature to 94~95ºC, and slowly add 8% chloric acid sodium solution. After the addition is completed, test the end point, take a sample and filter it while it is hot, and the end point is if there is no precipitation after the filtrate is cooled. Cool to below 60ºC, filter, wash until neutral, and dry to obtain 1,5-dichloroanthraquinone.

Purpose

As a dye intermediate. Used to synthesize disperse blue 2BLN.

1,1,1-Trichloroethane 1,1,1-Trichloroethane
Published by BDMAEE on | Permalink

1,1,1-trichloroethane structural formula

Structural formula

Business number 01GL
Molecular formula C2H3Cl3
Molecular weight 133.40
label

Methyl chloroform,

α-Trichloroethane,

Trichloroethane,

Methylchloroform,

Methylchloroform,

Ethylidyne trichloride,

Methyl chloroform,

Ethylidyne chlorode,

α-Trichloroethane,

MC,

Aliphatic halogenated derivatives

Numbering system

CAS number:71-55-6

MDL number:MFCD00000806

EINECS number:200-709-7

RTECS number:KJ2975000

BRN number:None

PubChem number:24845355

Physical property data

1. Properties: colorless liquid[1]

2. Melting point (℃): -32.5[2]

3. Boiling point (℃): 74.1[3]

4. Relative density (water=1): 1.3376 (20℃)[4]

5. Relative vapor density (air=1): 4.6[5]

6. Saturated vapor pressure (kPa): 13.33 ( 20℃)[6]

7. Critical temperature (℃): 311.5[7]

8. Critical pressure (MPa): 4.48[8]

9. Octanol/water partition coefficient: 2.49[9]

10 .Ignition temperature (℃): 500~537[10]

11. Explosion upper limit (%): 12.5[11]

12. Lower explosion limit (%): 7.5[12]

13. Solubility: insoluble in water, soluble in ethanol, ether, acetone, benzene, methanol , chloroform, etc. [13]

14. Viscosity (mPa·s, 15ºC): 0.903

15. Heat of evaporation (KJ/mol, b.p.): 32.198

16. Heat of fusion (KJ/mol): 4.500

17. Heat of formation (KJ/mol, 25ºC, liquid): 138.1

18. Specific heat capacity ( KJ/(kg·K), -15~26ºC, average): 1.0684

19. Conductivity (S/m): 7.3×10-9

20. Relative density (25℃, 4℃): 1.3299

21. Refractive index at room temperature (n25): 1.4313

22. Eccentricity factor: 0.216

23. Solubility parameter (J·cm-3)0.5: 17.301

24.van van der Waals area (cm2·mol-1): 7.580×109

25. van der Waals volume (cm3·mol-1): 53.720

26. The gas phase standard claims heat (enthalpy) (kJ·mol-1): -142.3

27. Gas phase standard entropy (J·mol-1·K-1): 320.14

28. Gas phase standard free energy of formation (kJ·mol-1): -76.1

29. Gas phase standard hot melt (J·mol-1·K-1): 92.34

30. Liquid phase standard claims heat (enthalpy) (kJ·mol-1): – 177.40

31. Liquid phase standard entropy (J·mol-1·K-1): 226.7

32. Liquid phase standard free energy of formation (kJ��mol-1): -83.47

33. Liquid phase standard hot melt (J·mol-1·K-1)：144.4

Toxicological data

1. Acute toxicity[14]

LD50: 9600mg/kg (rat oral)

LC50 : 17000ppm (rat inhalation, 4h)

2. Irritation[15]

Rabbit transdermal: 20mg (24h), moderate stimulation.

Rabbit eye: 100mg, mild irritation.

3. Subacute and chronic toxicity [16] Guinea pigs inhaled 5.46g/m3, 3 hours a day, 3 Months later, liver weight increased, fatty degeneration occurred, and pneumonia occurred.

4. Mutagenicity [17] Microbial mutagenicity: Salmonella typhimurium 10μg/dish. DNA repair: E. coli 500mg/L. Gene transformation and mitotic recombination: Saccharomyces cerevisiae 5350mg/L. Cytogenetic analysis: Hamster ovary 160mg/L.

5. Teratogenicity [18] The lowest toxic dose (TDLo) of 43mg/kg was administered orally to rats from 1 to 22 days after pregnancy, causing Developmental abnormalities of the cardiovascular system.

6. Carcinogenicity [19] IARC Carcinogenicity Comment: G3, insufficient evidence of carcinogenicity to humans and animals.

Ecological data

1. Ecotoxicity[20]

LC50: 42.3~105mg/L (96h) (fathead minnow); 73mg/L (48h) (Medaka)

2. Biodegradability[21]

Aerobic biodegradation (h) : 3360~6552

Anaerobic biodegradation (h): 13440~26208

Biodegradation-secondary sedimentation treatment (h): 220~250

3. Non-biodegradability[22]

Photooxidation half-life in air (h): 5393~53929

一 Grade hydrolysis half-life (h): 0.73

4. Other harmful effects [23] This substance is harmful to the environment, special attention should be paid to groundwater pollute.

Molecular structure data

1. Molar refractive index: 25.82

2. Molar volume (cm3/mol): 95.7

3. Isotonic specific volume (90.2K ): 222.1

4. Surface tension (dyne/cm): 28.9

5. Dielectric constant: None available

6. Polarizability ( 10-24cm3): 10.23

7. Single isotope mass: 131.930033 Da

8. Nominal mass: 132 Da

9. Average mass: 133.4042 Da

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 2.4

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 0

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 5

8. Surface charge: 0

9. Complexity: 26.4

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. In the presence of cobalt, nickel, platinum, palladium salts and their oxides, the reaction can be carried out at about 150°C. In the presence of sulfuric acid or metal chloride, it is heated to 75~160°C with water under pressure to generate acetyl chloride and acetic acid. Chlorination under light gives 1,1,2,2-tetrachloroethane. 1,1,1-Trichloroethane without stabilizer is oxidized in high-temperature air to form phosgene. 1,1,1-Trichloroethane is very stable to milk of lime and hardly decomposes when heated to reflux.

2. Stability[24] Stable

3. Incompatible substances[25] Strong oxidants, aluminum and its alloys, strong alkali

4. Conditions to avoid contact[26] Light

5. Polymerization hazard[27] No polymerization

6. Decomposition products[28] Hydrogen chloride

Storage method

Storage Precautions[29] Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Keep container tightly sealed. They should be stored separately from oxidants, alkalis, and food chemicals, and avoid mixed storage. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with emergency release equipment and suitable containment materials.

Synthesis method

1. Ethane chlorination method is produced by chlorination of ethane (or ethylene).

2. Vinylidene chloride hydrogen The chlorination method is obtained by the catalytic addition of vinylidene chloride and hydrogen chloride.

3. Hydrochlorination of vinyl chloride The method is to produce vinylidene chloride through the reaction of vinyl chloride and hydrogen chloride, which is then obtained by chlorination.

Purpose

1. Non-flammable solvent can be used as a cleaning agent to clean electronic parts and metal degreasing. The low surface tension and high penetration ability of this product can also be used to measure leakage at metal welds. It can also be used as an aerosol aerosol agent, flame-resistant coating material, cutting oil coolant and to make low-toxic and non-flammable adhesives. agent. Derivatives of trichloroethane are effective pesticides and intermediates in the pharmaceutical industry. 1,1,1,2-tetrachloroethane can be produced by chlorination. Vinylidene chloride can be produced by dehydrochlorination. Mainly used as solvent in the synthesis of chlorinated polyether thermoplastic polymers. Detergents, adhesives, metal cutting additives for machinery and electronic parts, etc.

2. Used as solvent and metal cleaner. [30]

�� Characteristics of high penetrating ability to determine leakage at metal welds. It can also be used as an aerosol aerosol agent, flame-resistant coating material, cutting oil coolant and to make low-toxic and non-flammable adhesives. Derivatives of trichloroethane are effective pesticides and intermediates in the pharmaceutical industry. 1,1,1,2-tetrachloroethane can be produced by chlorination. Vinylidene chloride can be produced by dehydrochlorination. Mainly used as solvent in the synthesis of chlorinated polyether thermoplastic polymers. Detergents, adhesives, metal cutting additives for machinery and electronic parts, etc.

2. Used as solvent and metal cleaner. [30]

1,4-Bis(trichlorophenyl)benzene 1,4-Bis(trichlorophenyl)benzene
Published by BDMAEE on | Permalink
1,4-bis(trichloromethyl)benzene structural formula

1,4-bis(trichloromethyl)benzene structural formula

Structural formula

Business number 01FC
Molecular formula C8H4Cl6
Molecular weight 312.84
label

1,4-Bis(trichloromethyl)benzene,

α,α,α,α’,α’,α’-hexachloro-p-xylene,

To hexachlorobenzyl,

Hexachloroparaxylene,

1,4-bistrichlorotoluene,

Α,Α,Α,Α’,Α’,Α’-hexachloro-p-xylene,

antischistosomiasis drugs

Numbering system

CAS number:68-36-0

MDL number:MFCD00000791

EINECS number:200-686-3

RTECS number:ZE4655000

BRN number:None

PubChem ID:None

Physical property data

1. Properties: White needle-like crystals or crystalline powder, with special odor and tasteless. It will slowly decompose when exposed to light and alkali and become acidic

2. Density (g/mL, 25/4℃): Uncertain

3. Relative vapor density (g/mL, Air=1): Uncertain

4. Melting point (ºC): 106-110

5. Boiling point (ºC, normal pressure): 312

6 . Boiling point (ºC, 5.2kPa): Uncertain

7. Refractive index: Uncertain

8. Flash point (ºC): Uncertain

9 . Specific rotation (º): Uncertain

10. Autoignition point or ignition temperature (ºC): Uncertain

11. Vapor pressure (kPa, 25ºC): Uncertain

12. Saturated vapor pressure (kPa, 60ºC): Uncertain

13. Heat of combustion (KJ/mol): Uncertain

14. Critical temperature (ºC): Uncertain

15. Critical pressure (KPa): Uncertain

16. Log value of oil-water (octanol/water) partition coefficient: Uncertain

17. Explosion upper limit (%, V/V): Uncertain

18. Explosion lower limit (%, V/V): Uncertain

19. Solubility : Insoluble in water, easily soluble in ethanol, xylene, petroleum ether and vegetable oil, etc.

Toxicological data

Acute toxicity: Rat oral LD50: 3200 mg/kg; Breeding: Rat oral TDLo: 2330 mg/kgSEX/DURATION: male 26 week(s) pre-mating; Rat oral TDLo: 2330 mg/kgSEX/ DURATION: female 26 weeks(s) pre-mating;

Ecological data

None

Molecular structure data

1. Molar refractive index: 64.32

2. Molar volume (cm3/mol): 192.0

3.   Isotonic volume (90.2K): 495.2

4. Surface tension (dyne/cm): 44.2

5. Polarizability (10-24cm3): 25.50

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 0

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 14

8. Surface charge: 0

9. Complexity: 161

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

None

Storage method

Keep in a sealed container away from light.

Synthesis method

Using mixed xylene as raw material, it is first sulfonated with 98% sulfuric acid to generate m-xylene sulfonate. The oil layer containing o- and p-xylene is separated from the sulfonation reaction product, washed with water, dried, and o- and p-xylene is distilled under reduced pressure. The by-product m-xylene can be obtained by hydrolysis of m-xylene sulfonate. 1,4-bis(trichloromethyl)benzene is obtained by chlorination of o- and p-xylene: put o- and p-xylene into the reaction pot, and then add benzoyl peroxide and triethanolamine. After heating to 70°C, introduce chlorine gas under light irradiation, react at 70-80°C for 6 hours, and then raise the temperature to 100-120°C to continue the reaction until the relative density of the reaction solution reaches 1.560-1.580 (65°C), which is the end point of the reaction. Stop passing chlorine and remove residual chlorine under reduced pressure. Cool to 5°C, filter and wash to obtain crude product, recrystallize and decolorize with activated carbon to obtain finished product.

Purpose

Anti-schistosomiasis drugs. It has certain effects on liver fluke disease, amoebiasis, malaria and intestinal nematodes. However, adverse reactions to the nervous system are more common, and delayed reactions last longer.

1,8-diazabicycloundec-7-ene/CAS 6674-22-2/DBU
Published by BDMAEE on | Permalink

1,8-diazabicycloundec-7-ene/CAS 6674-22-2/DBU

Overview:

1,8-Diazabicycloundec-7-ene is a colorless to light yellow transparent oily liquid with relatively low volatility, almost odorless, and alkaline. It changes color easily when exposed to light, and is hygroscopic and corrosive.

Name: 1,8-Diazabicyclo[5.4.0]undec-7-ene(DBU)

Product English Name: 1,8-Diazabicyclo[5.4.0]undec-7-ene

Packing Price: 200kg/drum

Purity specification: 98

Product Category: Pharmaceutical raw materials

6674-22-2 DBU Azabicyclic Diazabicyclo[5.4.0]undec-7-ene

Chinese name: 1,8-Diazabicycloundecene, Diazabicyclo, DBU

English name: 1,8-Diazabicyclo(5.4.0)undec-7-ene

Alias: 1,8-Diazabicyclo undec-7-ene, CAS 6674-22-2, catalyst DBU, epoxy accelerator DBU, polyurethane catalyst DBU, azabicyclo, diazabicyclo, Polycat DBU, Lupragen N700, PC CAT DBU

Molecular Formula: C9H16N2

Relative molecular mass: 152.2

CAS No.: 6674-22-2

Physicochemical properties:

1,8-Diazabicyclohexadec-7-ene is colorless to light yellow transparent oily liquid with relatively low volatility, almost odorless and alkaline. It is easy to change color when exposed to light, hygroscopic and corrosive.

Relative density: 1.04~1.07

Viscosity (25℃): 14mPa.s

Water solubility: soluble in water

Flash point(TCC):>96°C

Properties and Uses:

1,8-Diazabicyclohexadec-7-ene is used as a catalyst in the polyurethane industry, it is a very active low-odor gel catalyst, mainly used in applications requiring strong gel catalysis, including formulations containing alicyclic isocyanates or aliphatic isocyanates, which are less active than aromatic isocyanates and therefore require very strong catalysts.

1,8-Diazabicycloundec-7-ene catalyst activity is significantly enhanced with increasing temperature, for example, the catalytic rate constants of DBU for isocyanate-alcohol and isocyanate-water reactions at 70 °C are 67 and 35 times higher than those at 25 °C, respectively, whereas the catalytic activity of the commonly used bicyclic tertiary amine catalyst triethylenediamine is increased to 5 and 6 times its original catalytic activity, respectively;.

The 1,8-diazabicycloundec-7-ene catalyst can be used in formulations for integral skin foams, microcellular elastomers, and rigid foams.

The main use of DBU is as an excellent organic base deacidifier for drug synthesis. It can replace organic bases such as triethylamine, N,N-dimethylphenylamine, pyridine and quinoline, and is widely used in organic synthesis and semi-synthetic antibiotics, and obtains more satisfactory results in the dehalogenation reaction. It is widely used in the production of cephalosporin semi-synthetic antimicrobial drugs, such as ammonia and dichloroethane in the presence of DBU reaction to produce piperazine. It can also be used for epoxy resin hardener, rust inhibitor, can be formulated with high slow corrosion inhibitor, catalyst for other chemical reactions.

DBU in the application of epoxy resin DBU in the room temperature to 40 ℃ range of almost no curing reaction with the epoxy resin, and the temperature rises to 100 ℃ in 15min can make the epoxy resin gel. In epoxy resins, DBU is mainly used as a curing accelerator for epoxy resins used in the encapsulation of integrated circuits and electronic components. When used in the form of DBU salt, DBU is dissociated from it when it is heated during encapsulation to promote curing.

The combination of DBU and linear phenolic resin is a light yellow solid, which changes the disadvantage of DBU being easily hydrolyzed in humid environment. Therefore it consists of epoxy molding compound for IC encapsulation with good resistance to humidity and heat and high pressure steaming performance.

Storage and transportation:

It should be sealed and stored in dry, cool and ventilated warehouse

Packing:

200KG/drum Storage: it is recommended to store in dry and cool area with proper ventilation. Please fasten the package cover as soon as possible after the original packaging to prevent moisture and other substances from mixing and affecting the performance of the product. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating and drinking are prohibited in the workplace. Shower and change clothes after work. Store contaminated clothes separately and reuse them after washing. Maintain good hygiene practices.

Company Name:

Newtop Chemical Materials (Shanghai) Co., Ltd.

Sales Manager:

Hunter

E_Mail:

 sales@newtopchem.com

Telephone:

86-152 2121 6908

Fax:

86-021-5657 7830

Address:

Rm. 1104, No. 258, Songxing West Road,
Baoshan District, Shanghai, China (Mainland)

Website:

www.newtopchem.com

1,4-Butanediol BDO CAS110-63-4
Published by BDMAEE on | Permalink

1,4-Butanediol BDO CAS110-63-4

Overview:

Chinese name: 1,4-Butanediol (BDO)

Alias:Butylene glycol 4-butanediol 1,4-butanediol 4-Dihydroxybutane 1,4-dihydroxybutane

English Name:1,4-Butylene glycol~Tetramethylene glycol; tetramethylene glycol; 1,4-Butylene glycol; 75% 1,4-BUTANEDIOL; butane-1,4-diol; butane-1,1- diol

1,4-Butylene glycol (Butane-1,4-diol) is an organic substance with the molecular formula C4H10O2 and molecular weight 90.12. It is a colorless or light yellow oily liquid in appearance. Flammable, freezing point 20.1℃, refractive index 1.4461. soluble in methanol, ethanol, acetone, slightly soluble in ether. It is hygroscopic and has a bitter odor, but slightly sweet in the mouth.

Used as solvent and humidifier, also used in plasticizer, drug, polyester resin, polyurethane resin, etc.

Molecular formula(Formula): C₄HO₂

Molecular Weight(Molecular Weight): 90.12

CAS No.: 110-63-4

 

Product Name: Butanediol 4-butanediol 1,4-butanediol 4-Dihydroxybutane 1,4-dihydroxybutane

Molecular structure: See figure

Molecular formula: C₄HO₂

Molecular weight: 90.12

CAS No.: 110-63-4

EINECS No.: 203-786-5

MDL No. MFCD00002968

Physical and chemical properties:

Colorless, oily liquid, not easy to ignite. In contact with high heat, open flame or oxidizer, there is a risk of combustion.

Freezing point ≤19.0℃

Mass fraction of 1,4-butanediol≥99.5%

Bromine value ≤0.10%

Refractive index 1.445~1.446

Water content ≤0.10%

Hydroxyl value ≤0.2%

Chromaticity (platinum a cobalt color) ≤25

 

Preparation:

  1. Acetylene method: 1,4-butynediol is made by reacting acetylene and formaldehyde in the presence of Cu-Bi catalyst at 98kPa and 80-95℃. The latter is then catalyzed by nickel skeleton and hydrogenated at 1.372-2.06 MPa, 50-60°C to 1,4-butenedioate, followed by further catalytic hydrogenation with Ni-Cu-Mn/Al2O3 (13.7-20.6 MPa, 120-140°C) to 1,4-butanediol, which is then purified by distillation after removal of metal ions by ion exchange resin. 2. Maleic Anhydride Hydrogenation method 3. Butadiene method Acetyl oxidation reaction of 1,3-butadiene with acetic acid and oxygen to produce 1,4-diacetoxy-2-butene, then hydrogenated and hydrolyzed to make 4. 1,4-dichlorobutene method 1,4-dichlorobutene is an intermediate product of the process of producing chlorobutadiene from butadiene, which is used as raw material, hydrolyzed and hydrogenated to obtain 1,4-butanediol.

 

Uses:

1,4-butanediol is an important organic chemical and fine chemical raw material, and is the basic raw material for the production of polybutylene terephthalate (PBT) engineering plastics and PBT fiber; PBT plastic is one of the five most promising engineering plastics.

1,4 butanediol is the main raw material for the production of tetrahydrofuran, which is an important organic solvent. The polytetramethylene glycol ether (PTMEG) obtained after polymerization is the basic raw material for the production of high-elasticity spandex (Lycra fiber). Spandex is mainly used in the production of high-elasticity knitted products such as advanced sportswear and swimwear.

γ-butyrolactone, a downstream product of 1,4-butanediol, is the raw material for the production of 2-pyrrolidone and N-methylpyrrolidone products, from which a series of high value-added products such as vinylpyrrolidone and polyvinylpyrrolidone are derived, which are widely used in pesticides, pharmaceuticals and cosmetics.

 

Applications:

Used as solvent and humidifier, also used to make plasticizer, drugs, polyester resin, polyurethane resin, etc.

 

Storage and transportation:

Should be sealed and stored in a dry, cool and ventilated warehouse

 

Package:

200KG/drum Storage: It is recommended to store in dry and cool area with proper ventilation. Please fasten the lid as soon as possible after the original packaging to prevent the mixing of other substances such as water and other substances from affecting the product performance. Do not inhale dust and avoid skin and mucous membrane contact. Smoking, eating and drinking are prohibited in the workplace. After work, shower and change clothes. Store contaminated clothes separately and wash them before use. Maintain good hygiene habits.

1,2-Propanediol,3,3′-[(dibutylstannylene)bis(thio)]bis-; Dibutyltinbis(1-thiolglycerol)
Published by BDMAEE on | Permalink

Overview:

Chinese name: FASCAT4224 catalyst, dibutyl tin bis (1-thioglycerol),

Alias: FASCAT4224 catalyst, dibutyl tin bis (1-thioglycerol), CAS No. 68298-38-4,

English name: FASCAT 4224, 1,2-Propanediol,3,3′-[(dibutylstannylene)bis(thio)]bis-; Dibutyltinbis(1-thiolglycerol); Fascat 4224; 68298-38-4; di-n-butyl

FASCAT 4224 catalyst CAS 68298-38-4 Dibutyl tin bis (1-thioglycerol) 1,2-Propanediol,3,3'-[(dibutylstannylene)bis(thio)]bis-; Dibutyltinbis(1- thiolglycerol)


FASCAT 4224 catalyst CAS 68298-38-4 Dibutyl tin bis (1-thioglycerol)
1,2-Propanediol,3,3′-[(dibutylstannylene)bis(thio)]bis-; Dibutyltinbis(1-
thiolglycerol)

Physical and chemical properties:

CAS 68298-38-4

EC 269-561-9

Molecular formula C8H18CI2SN

Properties: the chemical properties of dibutyl tin bis (1-thioglycerol)

Uses: Organotin

Product category: Organometallic compounds

 

use:

 

 

Storage and transportation:

It should be sealed and stored in a dry, cool and ventilated warehouse.

 

package:

Packing: 25Kg cardboard drum.

BDMAEE：Bis (2-Dimethylaminoethyl) Ether

CAS NO：3033-62-3

China supplier

For more information, please contact the following email:

Email:sales@newtopchem.com

Email:service@newtopchem.com

Email:technical@newtopchem.com

BDMAEE Manufacture !