Application of CAS 128-04-1 Sodium dimethyldithiocarbamate
Used as a terminator for emulsion polystyrene butadiene rubber, nitrile rubber, styrene butadiene rubber latex, and nitrile butadiene rubber latex. Used as industrial fungicides, metal precipitation agents, vulcanization accelerators for rubber products, and agricultural pesticides. It is also an intermediate of bactericides thiram, ferram, thiram, zinc thiram, and nickel thiram.
Production method of CAS No.: 128-04-1, Sodium dimethyldithiocarbamate
The dimethylamino dithioformic acid is obtained by the addition of dimethylamine and carbon disulfide, and then it is obtained by salting with sodium hydroxide solution. The preparation method is to add water into the reaction kettle, add lye and 40% dimethylamine solution under stirring, and add carbon disulfide dropwise when cooled to about 10°C, and control the temperature of the dropping reaction to not exceed 30°C. After the dropwise addition of carbon disulfide is completed, Continue the reaction for 1 to 2 hours, and then stand still to separate the insoluble residue to obtain a thiram solution. To obtain solid thiram sodium, concentration under reduced pressure is required for crystallization. The reaction equation is as follows:
(CH3)2NH + CS2 → (CH3)2CNS2H
(CH3)2CNS2H + NaOH → (CH3)2CNS2Na + H2O
【Industry Chain】
【Reference quality index】Solid ≥92% liquid is 20%, 30%, 40% aqueous solution.
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Sodium dimethyldithiocarbamate SDD CAS 128-04-1 is SDD is scaly white crystal, easily soluble in water, the crystallization method of crystallization crystallization water containing 2.5 molecules, lose 2 molecular crystal water when heated to 115 ℃, 130 ℃ completely lose crystal water.
Specification
Sodium dimethyldithiocarbamate SDD 95% solid
Grade Solid 95%Free Alkali 0.5%
Ph Value 7.5~11.5
Appearance White or gray crystal
Sodium dimethyldithiocarbamate SDD 40% solution
Grade Liquid 40%
Free Alkali 0.5%
Ph Value 9.0~12.0
Appearance Light yellow transparent liquid
Application
1. Industrial waste water treatment
2. Sugar industry
3. Chemical industry
4. Heavy metal precipitator
5. Paper making industry
6. Bactericide, inhibitor
7. Rubber vulcanization accelerator
8. Styrene butadiene rubber polymerization termination agent, used as termination agent of emulsion type styrene butadiene rubber and styrene butadiene latex, industrial bactericide, vulcanization accelerator and insecticide
Packaging
25kg bag, 25mt per 20ft container
240kg drum, 19.2mt per 20ft container