6341. Nabam

Nomenclature

CAS number: 142-59-6
1,2-Ethanediylbiscarbamodithioic acid disodium salt; ethylenebis[dithiocarbamic acid] disodium salt; disodium ethylenebis[dithiocarbamate]; Dithane D-14 (Rohm & Haas); Parzate.
C4H6N2Na2S4; mol wt 256.34.
C 18.74%, H 2.36%, N 10.93%, Na 17.94%, S 50.04%.

Description and references

Prepd by treating ethylenediamine with CS2 in the presence of NaOH: Hester, US 2317765 (1943 to Rohm & Haas); Flenner, US 2504404 (1950 to du Pont). Fluorimetric determn in water and cereals: T. Pérez-Ruiz et al., Talanta 43, 193 (1996). Degradation study: E. Milanova et al., Pulp Paper Can. 100, 67 (1999). Toxicology study: R. B. Smith, Jr. et al., Fed. Proc. 11, 391 (1952).

Chemical structure

Properties

LD50 orally in rats: 395 ±12 mg/kg (Smith).

Derivative

Hexahydrate.

Properties

Crystals from alc. Moderately sol in water. Forms a continuous film on plant surfaces, which is said to become insol in water.

Caution

Direct contact may cause skin irritation. See Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section II, p 312.

Use

Agricultural fungicide; biocide in pulp and paper industry.