Basic information
- Name:
Metaldehyde
- CAS No.:
9002-91-9
- Molecular Structure:
- Formula:
- (C2H4O)n
- Synonyms:
- Antimilace;2,4,6,8-Tetramethyl-1,3,5,7-tetraoxacyclooctane or acetaldehyde homopolymer;Namekil;Acetaldehyde, polymers;Acetaldehyde, homopolymer;Limovet;Schnex-schneckentod;Polyacetaldehyde;Limax;Meta;Slugit;Terrasan-schneckentod gekoernt;Schneckokorn;
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Chemistry
Molecular Structure of Polyacetaldehyde (CAS No.9002-91-9):
Molecular Formula: (C2H4O)n
CAS No: 9002-91-9
Melting Point: 190-196 ºC
Density 0,808 g/cm3
Flash Point: 50 °C
Storage Temp.: 0-6°C
Form: Powder
Product Categories: Polymers;Insecticide
Classification Code: Molluscacides;Pesticides;TSCA Flag XU [Exempt from reporting under the Inventory Update Rule]
Uses
Polyacetaldehyde(9002-91-9) is a highly effective active ingredient to control slugs and snails (molluscicide).
Production
Polyacetaldehyde(9002-91-9) is formed by cationic polymerization using boron trifluoride (BF3) in liquid ethylene (CH2=CH2). At temperatures below -75 °C using anionic initiators, such as metal alkyls in a hydrocarbon solvent, a crystalline isotactic polymer is obtained. Molecular weights of the products fall into the range 800,000 to 3,000,000.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| dog | LD50 | oral | 600mg/kg (600mg/kg) | Pesticide Manual. Vol. 9, Pg. 556, 1991. |
Safety Profile
Safety Information of Polyacetaldehyde (CAS No.9002-91-9):
Hazard Codes: 
Xn
Risk Statements: 10-22
R10:Flammable.
R22:Harmful if swallowed.
Safety Statements: 13-23-46
S13:Keep away from food, drink and animal foodstuffs.
S23:Do not breathe vapour.
S46:If swallowed, seek medical advice immediately and show this container or label.
RIDADR: UN 1332 4.1/PG 3
WGK Germany: 1
RTECS: AB3042000
HazardClass: 4.1
PackingGroup: III
Hazardous Substances Data: 9002-91-9(Hazardous Substances Data)
Specification
Polyacetaldehyde (CAS No.9002-91-9), it also can be called Acetaldehyde polymerized ; Acetaldehyde homopolymer ; 2,4,6,8-Tetramethyl-1,3,5,7-tetraoxacyclooctane ; Antimilace . It is white crystalline powder.
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