108-62-3 Usage
Description
Metaldehyde (CAS: 108-62-3) is a polymer of acetaldehyde that is used as a pesticide against snails and slugs, and also as a fuel. It was discovered by von Liebig in 1835, and a century later its use as a molluscicide was proposed by Gimingham and Newton in 1937. It is manufactured by reacting acetaldehyde with various acids at a low temperature. Metaldehyde is a white crystalline powder with a mild menthol odor.
Uses
Used in Pesticide Industry:
Metaldehyde is used as a molluscicide for controlling slugs and snails in gardens of a variety of vegetable and ornamental crops. It is available in both solid and liquid formulations with metaldehyde concentrations ranging from 1.8 to 8% in pellet form, or in concentrations of up to 20% in liquid formulations.
Used in Fuel Industry:
Metaldehyde is also used as a camping fuel and may be purchased in a tablet form for this purpose.
Used in Agricultural Industry:
As a Molluscicide:
Metaldehyde, a tetramer of acetaldehyde, is a molluscicide used in a variety of vegetable and ornamental crops in the field or greenhouse. It may be formulated with or without calcium arsenate and is also available in a mixed formulation with thiram. It is a U.S. EPA restricted Use Pesticide (RUP).
Flammability and Explosibility
Flammable
Trade name
ANTIMILACE?; ARIOTOX?;
CEKUMETA?; DEADLINE?; DURHAM?;
HALIZAN?; LIMATOR?; META?; METASON?;
NAMEKIL?; SLUG-TOX?; TRAILS END?
Safety Profile
Human poison by ingestion. Human systemic effects by ingestion: convulsions or effect on seizure threshold. Moderately toxic by inhalation and skin contact. Experimental reproductive effects. Mutation data reported. A flammable solid. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
Potential Exposure
It is used as a poison for slugs and
snails, and as a fuel in small heaters.
Environmental Fate
Metaldehyde is of low persistence in the soil. It is degraded
aerobically with a half-life of approximately 67 days to inactive
residues. Metaldehyde is soluble in water. Metaldehyde
undergoes rapid hydrolysis to acetaldehyde in an aquatic
environment.
Shipping
UN1332 Metaldehyde, Hazard Class: 4.1;
Labels: 4.1-Flammable solid
Toxicity evaluation
The toxic mechanism in snails and slugs is different from that
in mammals and birds. Metaldehyde irreversibly damages
mucous secreting cells of snails and slugs on which these
organisms depend. In animals and birds, the proximate toxic
mechanism of metaldehyde is not known, but is either due
to toxicity of metaldehyde itself or of its metabolite acetaldehyde
on the brain and other tissues. The fundamental
neurotoxic molecular mechanisms are not known, but
a depression of serotonin and GABA is suspected to play
a role.
Incompatibilities
Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides
Check Digit Verification of cas no
The CAS Registry Mumber 108-62-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 8 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 108-62:
(5*1)+(4*0)+(3*8)+(2*6)+(1*2)=43
43 % 10 = 3
So 108-62-3 is a valid CAS Registry Number.
InChI:InChI=1/C8H16O4/c1-5-9-6(2)11-8(4)12-7(3)10-5/h5-8H,1-4H3
108-62-3Relevant articles and documents
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Ogino et al.
, p. 639,640 (1966)
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MULTICOMPARTMENT GRANULATE FORMULATIONS FOR ACTIVE SUBSTANCES
-
, (2009/12/28)
The invention relates to molded article that contains active substances and comprises at least two compartments that have a different material composition. Each compartment is independently provided with at least one active substance that is contained in a matrix. Each matrix encompasses at least one filler at a concentration of ≧20 percent by weight to ≦100 percent by weight relative to the total weight of the respective matrix. The invention further relates to a method for producing such molded articles as well as the use thereof.
Bromonitrothienyldioxanes
-
, (2008/06/13)
The invention relates to novel 5-bromo-5-nitro-2-thienyl-1,3-dioxanes of the formula (I) in which R1, R2 and R3 are as defined in the description are highly suitable for use as biocides for protecting plants and industrial materials.