Sodium diethyldithiocarbamate Chemical Properties

Melting point:

95°C

Density 

1.1000

vapor pressure 

0Pa at 20℃

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

about 35 % in water, less soluble in organic solvents. However, the free acid, diethyldithiocarbamic acid, is readily soluble in organic solvents and less soluble in water. Thus, on acidification of an aqueous solution of a diethyldithiocarbamate, the free acid can be extracted with chloroform or carbon tetrachloride. The distribution ratio is 2,360 for chloroform and 343 for carbon tetrachloride.

form 

Liquid

color 

Clear, colorless

Specific Gravity

1.08

Odor

wh., sl. brown or sl. pink odorless cryst.

Water Solubility 

>=10 g/100 mL at 14 ºC

Hydrolytic Sensitivity

0: forms stable aqueous solutions

LogP

-1.1 at 20℃

CAS DataBase Reference

148-18-5(CAS DataBase Reference)

IARC

3 (Vol. 12, Sup 7) 1987

EPA Substance Registry System

Sodium diethyldithiocarbamate (148-18-5)

Safety Information

RIDADR 

3077

HazardClass 

9

PackingGroup 

III

Hazardous Substances Data

148-18-5(Hazardous Substances Data)

MSDS

• Language:English Provider:Sodium diethyldithiocarbamate

Sodium diethyldithiocarbamate Usage And Synthesis

Chemical Properties

Sodium diethyldithiocarbamate is a white or colorless crystalline powder, easily soluble in water and alkaline, soluble in alcohol, rapidly decomposed in acidic aqueous solution to separate out carbon disulfide and make the solution cloudy. In ammonia medium, it generates precipitate or brown colloidal solution with copper ion. Copper reagent is applied in the color development reaction of copper, used as precipitant and solvent extractant of soft metal ions, also used as photometric reagent for the determination of bismuth, copper, nickel and other metals.

Uses

Sodium diethyldithiocarbamate is an organic molecular entity. It is an inhibitor of superoxide dismutase, having both antioxidant and oxidant effects.

Uses

Sodium diethyldithiocarbamate reacts with even more metal ions than does dithizone. However, its analytical application is seriously limited by its considerably lower stability in acidic aqueous media. According to the examinations of Bode,the reagent undergoes considerable decomposition within 5 minutes at pH 5. The analytical application of the reagent is therefore restricted to a very narrow pH range. There is no chance with this reagent to enhance the analytical selectivity of extractions by making use of the difference between the stabilities of its complexes with various metal ions and to choose the pH of the reaction mixture accordingly.

Preparation

This salt is obtained by treating carbon disulfide with diethylamine in the presence of sodium hydroxide:
CS2+ HN(C2H5)2+ NaOH → NaS2CN(C2H5)2+ H2O

Definition

ChEBI: Sodium diethyldithiocarbamate is an organic molecular entity.

General Description

Odorless white or slightly brown or slightly pink crystals.

Air & Water Reactions

Water soluble. Thio and dithiocarbamates slowly decompose in aqueous solution to form carbon disulfide and methylamine or other amines. Such decompositions are accelerated by acids.

Reactivity Profile

Sodium diethyldithiocarbamate is not compatible with strong oxidizing agents. Aqueous solutions slowly decompose to form carbon disulfide and an amine. Such decompositions are accelerated by acids. Addition of acid to the aqueous solution produces a white turbidity .

Fire Hazard

Flash point data for Sodium diethyldithiocarbamate are not available; however, Sodium diethyldithiocarbamate is probably combustible.

Flammability and Explosibility

Non flammable

Safety Profile

Moderately toxic by ingestion, intraperitoneal, and subcutaneous routes. Experimental reproductive effects. Questionable carcinogen with experimental neoplastigenic and teratogenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Na2O. Used as a pesticide. See also CARBAMATES

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