Thiram
- TMTD
- Tetramethylthiuramdisulfide
- Pomarsol
- Thianosan
- Tetramethylthioperoxydicarbondiamid
- Tutan
- Bis ( dimethylthiocarbamoyl ) disulfide
P03AA05
Colorless, odorless, flammable crystals
Fixed
1.3 g · cm -3
148-152 ° C
129 ° C ( 26.6 hPa)
- Practically insoluble in water ( 16.5 mg · l-1 at 20 ° C)
- Poorly in ethanol and diethyl ether
- Soluble in acetone and chloroform
Attention
1 mg · m-3
> 500 mg · kg -1 ( LD50, rat, oral)
Template: Infobox chemical / molecular formula search available
Thiuram ( TMTD in Russia, thiram in many other languages ) is a chemical compound selected from the group of dithiocarbamates, more specifically, a dimethyl- dithiocarbamate. It is in the form of a colorless and odorless powder.
History
Thiram is approved since 1948 in the United States as a pesticide. The first studies on the effects of thiram took place in the 1960s. Today it is produced and used in large quantities. It is subject to the Rotterdam Convention.
Properties
Thiram decomposes above the melting point in sulfur, nitrogen and carbon oxides.
Use
The substance is used as an active ingredient in plant protection products as a broadband fungicide (eg cotton, rice), as a repellent (eg, rodents ) and as mordants for seeds of various vegetables. It is sometimes used in combination with other substances such as Tecoram, Dimethomorph or metalaxyl.
In Austria no thiram - containing preparation has been approved in Germany it can be used against the so-called emergence diseases. In Switzerland, there are next to use against fungal diseases of seedling approvals as wound closure means for fruit trees, against the scab on fruit and as Wildabhaltemittel.
Moreover, thiram is used in the rubber industry as vulcanization accelerators.
Safety
Thiram is only slightly toxic, but can cause allergies in large dose or prolonged contact and damage the liver. For exposure in conjunction with alcohol intake occurs Acetaldehydsyndrom. At reaction of thiram with nitrosating agents may cause the formation of carcinogenic N- nitrosamines. Traces ( 100-500 ppm) of thiram for a long time in the feed of birds cause soft eggshells, reduced egg production and abnormalities in poultry.
The effects of thiram on human health and the environment are tested under REACH in 2014 under substance evaluation of Sweden.