108-62-3

Usage

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

InChI:InChI=1/C8H16O4/c1-5-9-6(2)11-8(4)12-7(3)10-5/h5-8H,1-4H3

Upstream product

• 75-07-0 acetaldehyde 

Downstream Products

• 75-07-0 acetaldehyde 
• 123-63-7 paracetaldehyde 
• 75-34-3 1,1-dichloroethane 
• 75-87-6 chloral 
• 34557-54-5 methane 
• 74-85-1 ethene 
• 64-19-7 acetic acid 

Related news

Research papersModelling of Metaldehyde (cas 108-62-3) concentrations in surface waters: A travel time based approach08/23/2019

Diffuse agricultural pollution is widely recognized as a significant threat to the quality of water resources. Metaldehyde is a soluble synthetic aldehyde pesticide used globally in agriculture which has caused recent concern due to high observed levels (exceeding the European and UK standards f...detailed

Calibration and field evaluation of the Chemcatcher® passive sampler for monitoring Metaldehyde (cas 108-62-3) in surface water08/21/2019

Metaldehyde is a potent molluscicide. It is the active ingredient in most slug pellets used for crop protection. This polar compound is considered an emerging pollutant. Due to its environmental mobility, metaldehyde is frequently detected at impacted riverine sites, often at concentrations abov...detailed

Topical PerspectivesExplaining the interactions between Metaldehyde (cas 108-62-3) and acidic surface groups of activated carbon under different pH conditions08/20/2019

Metaldehyde (MA) is an organic compound widely used in agriculture all around the world as molluscicide. There are growing concerns that relatively high levels of MA have been detected in surface water, which could be ascribed to the fact that it is transparent to common wastewater treatment pro...detailed

From full-scale biofilters to bioreactors: Engineering biological Metaldehyde (cas 108-62-3) removal08/19/2019

Polar, low molecular weight pesticides such as metaldehyde are challenging and costly to remove from drinking water using conventional treatment methods. Although biological treatments can be effective at treating micropollutants, through biodegradation and sorption processes, only some operatio...detailed

Relevant academic research and scientific papers

Synthesis method of metaldehyde

The invention belongs to the field of organic synthesis, and particularly discloses a synthesis method of metaldehyde. The synthesis method comprises the following steps: S1, preparing 1-100 kg of acetaldehyde and 0.05-5 kg of diethyl ether, and adding the diethyl ether into the acetaldehyde; S2, carrying out cooling, then carrying out a reaction by using a heterogeneous solid heteropolyacid loaded catalyst fixed bed, carrying out filtering, washing the obtained solid with water, and carrying out drying to obtain a white crystalline metaldehyde product; and S3, distilling the filtrate, addingsulfuric acid as a catalyst, and separating out acetaldehyde and diethyl ether by distilling for feeding in a next time. According to the synthesis method, the reaction conditions are mild, the cost is low, and the problems of long reaction time, harsh reaction conditions and many side reactions in an old process are solved, so that the process is stable, the yield is high, operation is simple, cost is low, environment protection and safety are achieved, continuous and efficient production is realized, and industrial scale production is facilitated.

MULTICOMPARTMENT GRANULATE FORMULATIONS FOR ACTIVE SUBSTANCES

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.

Method of phenol and carbonyl production

The present invention describes a high yield and simplified method of preparing phenols and carbonyl compounds, such as acetaldehyde, through the catalytic decomposition of aromatic hydroperoxides. The synthetic process generally consists of decomposing hydroperoxides under a positive gas atmosphere and at an elevated temperature (80 to 100° C.) in the presence of a catalytic amount (0.01-0.8 mass percent (%)) of an anionic surface-active agent of the formula R—OSO3M or R—OP3Z2, where “M” is Na or K, where “Z” is Na, K or an alkyl groups containing between ten and fourteen carbons (C10-C14) and where “R” is an alkyl group consisting of between ten and fourteen carbons (C10-C14).

Bromonitrothienyldioxanes

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.

Dithiazoldioxides and the use thereof as microbicides

The invention relates to novel dithiazole dioxides, to processes for their preparation and to their use in crop protection and in the protection of materials.

N-sulfonyliminodithio compounds useful for in plant and material protection

N-sulfonyliminodithio compounds have the formula (I), in which R1 and R2 stand for optionally substituted alkyl, alkenyl or alkinyl, and Ar stands for optionally substituted aryl; also disclosed are processes for preparing these compounds and their use for plant and material protection. STR1

1,3,2-benzodithiazol-1-oxides as microbiocides

A description is given of novel and know 1,3,2-benzodithiazole 1-oxides of the formula (I) STR1 and of their preparation and use for protecting industrial materials against infestation by microorganisms.

Mould-resistant emulsion paints

The application relates to emulsion paints which are protected against fungal infestation by the use of N-alkyl-benzothiophene-2-carboxamide S,S-dioxides.

Medicaments containing 1-thiocarbamoyl-5-hydroxy-pyrazoles and their use as agents for combating septic shock

This application relates to new thiocarbamoyl compounds of the formula (I) STR1 in which R1, R2, R3 and R4 have the meanings given in the description.

Macrocyclic plant acaricides

Compounds of the formula I STR1 in which either R is methyl and there is a double bond in the 9,10-position, or in which R is hydrogen and there is a single bond in the 9,10-position, are highly active against Acarina which damage plants.