2H-Thiopyran-3,5(4H,6H)-dione
[CAS# 6881-49-8]

Identification

• Name: 2H-Thiopyran-3,5(4H,6H)-dione
• Synonyms: 3,5-Dioxothiane; 3,5-Penthianedione; NSC 293807
• Molecular Formula: C₅H₆O₂S
• Molecular Weight: 130.17
• CAS Registry Number: 6881-49-8
• EC Number: 842-630-6

Properties

• Solubility: Soluble (47 g/L) (25 ºC), Calc.^*
• Density: 1.315±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 80-81 ºC (benzene )^**
• Boiling point: 257.9±20.0 ºC (760 Torr), Calc.^*
• Flash point: 120.3±11.8 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** Fehnel, Edward A.; Journal of the American Chemical Society 1955, V77, P4241-4.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H312
Acute toxicity	Acute Tox.	4	H302
Serious eye damage	Eye Dam.	1	H318
Acute toxicity	Acute Tox.	4	H332