3,6-Dichloropyridazine
Structural formula
| Business number | 03TX |
|---|---|
| Molecular formula | C4H2Cl2N2 |
| Molecular weight | 148.98 |
| label |
Diclopyridazine, 3,6-Dichloropyridazine, 3,6-Dichloropyridine, 3,6-Dichloro-1,2-diazine |
Numbering system
CAS number:141-30-0
MDL number:MFCD00006466
EINECS number:205-478-6
RTECS number:UR5886250
BRN number:111151
PubChem ID:None
Physical property data
1. Properties: White flaky crystals
2. Density (g/mL, 25/4℃): 0.8290
3. Melting point (℃): 68
4. Boiling point (ºC, normal pressure): 89-91
5. Refractive index: 1.4346
6. Solubility: Very soluble in acetone and Chloroform, slightly soluble in water and ether.
Toxicological data
1. Acute toxicity: Rat oral LD50: >50 mg/kg
2. Inhalation toxicity: Rat: >1070 mg/m3/4H
Ecological data
1. Other harmful effects: This substance may be harmful to the environment, and special attention should be paid to water bodies.
Molecular structure data
1. Molar refractive index: 32.22
2. Molar volume (cm3/mol): 99.7
3. Isotonic specific volume (90.2K): 267.3
4. Surface tension (dyne/cm): 51.5
5. Polarizability (10-24cm3): 12.77
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: 2
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: none
6. Topological molecule polar surface area 25.8
7. Number of heavy atoms: 8
8. Surface charge: 0
9. Complexity: 68.4
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
Stable under normal temperature and pressure
Toxic substances. Harmful if inhaled, toxic if swallowed, irritating to eyes, respiratory tract and skin. Do not inhale the dust. If it comes into contact with your eyes, rinse immediately with plenty of water and seek medical treatment. Use appropriate gloves and protective glasses or a face mask. If you have an accident or feel unwell, seek medical advice immediately (it is best to bring the product container label with you).
Storage method
Stored under freezing conditions
Synthesis method
Obtained from maleic anhydride through ring expansion and chlorination.
Purpose
1. 3,6-Dichloropyridazine is mainly used in the synthesis of Salazodine and SulfachlorideSulfachlorpyridazine, long-acting sulfonamide (SMP), Sulfamethoxypyridazineacetyl, PSMP, Sulfamazone and Azintamide.
2. Used as pharmaceutical and pesticide intermediates.
3. Used as pharmaceutical intermediates for the production of long-acting sulfonamides.