2-(Methylthio)thiophene-5-carboxaldehyde
[CAS# 24445-35-0]

Identification

• Name: 2-(Methylthio)thiophene-5-carboxaldehyde
• Synonyms: 5-Methylsulfanylthiophene-2-carboxaldehyde; 5-Methylthiothiophene-2-carboxaldehyde
• Molecular Formula: C₆H₆OS₂
• Molecular Weight: 158.24
• CAS Registry Number: 24445-35-0
• EC Number: 806-953-6

Properties

• Solubility: Very slightly soluble (0.68 g/L) (25 ºC), Calc.^*
• Density: 1.28±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 24-25 ºC^**
• Boiling point: 145-162 ºC (4 Torr)^***
• Refractive index: 1.6624 (589.3 nm 20 ºC)^****
• Flash point: 122.3±23.2 ºC, Calc.^*

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

^** Gronowitz, S.; Chemica Scripta 1976, V10(2), P90-6.

^*** Gol'dfarb, Ya. L.; Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya 1969, (8), P1769-75.

^**** Profft, E.; Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin 1959, V1, P180-8.

Safety Data

• Hazard Symbols: Xn
• Risk Codes: R22;R37/38;R41;R43
• Safety Description: S26;S36/37;S39

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2A	H319
Acute toxicity	Acute Tox.	4	H302
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H332
Acute toxicity	Acute Tox.	4	H312
Specific target organ toxicity - single exposure	STOT SE	3	H335