Histamine
[CAS# 51-45-6]

Identification

• Classification: API >> Diagnostic medication >> Organ function test agent
• Name: Histamine
• Synonyms: 1H-Imidazole-4-ethanamine; 2-(4-Imidazolyl)ethylamine; 4-(2-Aminoethyl)-1H-imidazole
• Molecular Formula: C₅H₉N₃
• Molecular Weight: 111.15
• CAS Registry Number: 51-45-6
• EC Number: 200-100-6

Properties

• Melting point: 83-84 °C
• Boiling point: 167 °C (0.8 mmHg)

Safety Data

• Hazard Symbols: Xn
• Risk Statements: R22;R36/37/38;R42/43
• Safety Statements: S22;S26;S36/37

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Skin sensitization	Skin Sens.	1	H317
Respiratory sensitization	Resp. Sens.	1	H334
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	3	H301

• Transport Information: UN 2811