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Cas Database |
| Name |
Metaldehyde |
EINECS | 200-836-8 |
| CAS No. | 9002-91-9 | Density | 0,808 g/cm3 |
| PSA | 0.00000 | LogP | 0.00000 |
| Solubility | 0.2g/L(17 oC) | Melting Point |
165 °C |
| Formula | (C2H4O)n | Boiling Point | 18.6oC at 760mmHg |
| Molecular Weight | 44.0532 | Flash Point | 50 °C |
| Transport Information | N/A | Appearance | White needle-shaped crystalline |
| Safety | 13-23-46-45 | Risk Codes |
 Xn:Harmful; |
| Molecular Structure |
|
Hazard Symbols | R10:; R22:; |
| 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; |
Article Data | 3531 |
Metaldehyde Chemical Properties
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]
Metaldehyde Uses
Polyacetaldehyde(9002-91-9) is a highly effective active ingredient to control slugs and snails (molluscicide).
Metaldehyde 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.
Metaldehyde 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. |
Metaldehyde 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)
Metaldehyde 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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