2,6-Diamino-4(3H)-pyrimidinethione
[CAS# 56-08-6]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrimidine compound >> Mercaptopyrimidine
• Name: 2,6-Diamino-4(3H)-pyrimidinethione
• Synonyms: 2,4-Diamino-6-mercaptopyrimidine; 2,4-Diaminopyrimidine-6-thiol; NSC 12888
• Molecular Formula: C₄H₆N₄S
• Molecular Weight: 142.18
• CAS Registry Number: 56-08-6
• EC Number: 622-549-0

Properties

• Density: 1.78±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: >360 ºC^**
• Boiling point: 289.1±43.0 ºC (760 Torr), Calc.^*
• Flash point: 128.7±28.2 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2016 ACD/Labs)

^** Koppel, Henry C.; Journal of Organic Chemistry 1961, V26, P792-803.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	4	H302