Polyacetaldehyde Metaldehyde
Structural formula
| Business number | 02XL |
|---|---|
| Molecular formula | C8H16O4 |
| Molecular weight | 176.21 |
| label |
paraformaldehyde, mida, snail enemy, snail slayer, Acetaldehyde, mida, 2,4,6,8-tetramethyl-1,3,5,7-tetraoxacyclooctane, metaldehyde, Antimilace, Ariotox, Halizan, pesticides |
Numbering system
CAS number:108-62-3
MDL number:MFCD00134115
EINECS number:203-600-2
RTECS number:XF9900000
BRN number:None
PubChem ID:None
Physical property data
1. Properties: The pure product is colorless rhombic crystals.
2. Density (g/mL, 25℃): 1.120~1.127
3. Relative vapor density (g/mL, air=1): 6.06
4. Melting point (ºC): 246
5. Boiling point (ºC, normal pressure): Undetermined
6. Boiling point (ºC, mm Hg): Undetermined
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7. Refractive index (D20): Undetermined
8. Flash point (ºC): 36
9. Specific rotation (ºC): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (mmHg, ºC ): Undetermined
12. Saturated vapor pressure (kPa, 20ºC) Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14 . Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Log value of oil-water (octanol/water) partition coefficient: Undetermined
17. Explosion upper limit (%, V/V): Undetermined
18. Explosion lower limit (%, V/V): Undetermined
19 . Solubility: Insoluble in water, soluble in some organic solvents.
Toxicological data
1. Acute toxicity: Rat oral LD50: 227 mg/kg
Mouse oral LD5O: 200 mg/kg
Rabbit skin LD5O: 2275 mg/ kg
Ecological data
This substance is harmful to the environment, and special attention should be paid to the pollution of water bodies.
Molecular structure data
1. Molar refractive index: 43.70
2. Molar volume (cm3/mol): 186.0
3. Isotonic specific volume (90.2K): 415.9
4 , Surface tension (dyne/cm): 24.9
5. Polarizability (10-24cm3): 17.32
Compute chemical data
1. Hydrophobic parameter calculation reference value (XlogP): 1.1
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 4
4. Number of rotatable chemical bonds: 0
5. Number of tautomers:
6. Topological molecular polar surface area (TPSA): 36.9
7. Number of heavy atoms: 12
8. Surface charge: 0
9. Complexity: 91
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 Number: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
Avoid contact with strong oxidizing agents.
Storage method
Stored in a cool, ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. The storage temperature should not exceed 30℃. The packaging is sealed. They should be stored separately from oxidants and food chemicals, and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is prohibited to use mechanical equipment and tools that are prone to sparks. Suitable materials should be available in the storage area to contain spills.
Synthesis method
This product can be produced by the acetylene hydration method or the polymerization of acetaldehyde in the presence of a catalyst.
Purpose
It is a special pesticide that kills molluscs, such as snails and slugs, and is also used as solid fuel
