Ammonium Dithiocarbamate
Title: Ammonium Dithiocarbamate
CAS Registry Number: 513-74-6
CAS Name: Dithiocarbamic acid monoammonium salt
Additional Names: ammonium sulfocarbamate
Molecular Formula: CH6N2S2
Molecular Weight: 110.20
Percent Composition: C 10.90%, H 5.49%, N 25.42%, S 58.19%
Line Formula: NH2CSSNH4
Literature References: Prepd from CS2 and NH3: Mathes, Inorg. Synth. 3, 48 (1950); Redemann et al., Org. Synth. coll. vol. III, 763 (1955); Gatlow, Hahnkamm, Z. Anorg. Allg. Chem. 364, 161 (1969). Crystal structure: Cappuchi et al., Chem. Commun. 1966, 44l.
Properties: Yellow, lustrous almost odorless, orthorhombic crystals when fresh. Undergoes a reversible, exothermic transition at 63°; mp 99° (dec). d420 1.451. Sol in water. Decomposes in air, and is then no longer clearly sol; acquires an odor of H2S; the decomposition products contain ammonium thiocyanate, ammonium sulfide, etc. Keep in tightly closed bottles.
Melting point: mp 99° (dec)
Density: d420 1.451
Use: Instead of H2S or (NH4)2S for pptg metals in chemical analysis; synthesis of heterocyclic compounds.

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