Clonidine
[CAS# 4205-90-7]

Identification

• Classification: API >> Circulatory system medication >> Antihypertensive drug
• Name: Clonidine
• Synonyms: 2-(2,6-Dichlorophenylimino)imidazolidine; 734571A; Arkamin; Catapres-TTS; Catapress; Catapressan
• Molecular Formula: C₉H₉Cl₂N₃
• Molecular Weight: 230.09
• CAS Registry Number: 4205-90-7
• EC Number: 224-119-4

Properties

• Solubility: Very slightly soluble (0.17 g/L) (25 ºC), Calc.^*
• Density: 1.50±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 141-142 ºC^**

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

^** Staehle, Helmut; Archiv der Pharmazie (Weinheim, Germany) 1978, V311(10), P839-42.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	3	H301
Acute toxicity	Acute Tox.	1	H330
Acute toxicity	Acute Tox.	1	H310
Acute toxicity	Acute Tox.	3	H331
Acute toxicity	Acute Tox.	3	H311
Specific target organ toxicity - single exposure	STOT SE	1	H370
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	2	H310
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410