3697-42-5

Basic information

• Product Name: Chlorhexidine hydrochloride
• Synonyms: Chlorhexidine dihydrochloride >=98%;Chlorhexidini Hydrochloride;1,1’-hexamethylenebis(5-(p-chlorophenyl)-biguaniddihydrochloride;2,4,11,13-tetraazatetradecanediimidamide,n,n’’-bis(4-chlorophenyl)-3,12-diimin;2,4,11,13-Tetraazatetradecanediimidamide,N,N’’-bis(4-chlorophenyl)-3,12-diimino-,dihydrochloride;ArlacideH;Biguanide,1,1’-hexamethylenebis[5-(p-chlorophenyl)-,dihydrochloride;Chlorhexidiniumdichloride
• CAS NO: 3697-42-5
• Molecular Formula: C₂₂H₃₀Cl₂N₁₀*2ClH
• Molecular Weight: 578.37
• EINECS: 200-636-0
• Product Categories: Pharmaceutical raw materials;Surface active formulations fungicide;API;disinfectant;Intermediates & Fine Chemicals;Pharmaceuticals;Isotope Labeled Compounds;LISIUM;medical intermediate
• Mol File: 3697-42-5.mol
• Article Data: 1

Chemical Properties

• Melting Point: 111-116 °C
• Boiling Point: 699.3 °C at 760 mmHg
• Flash Point: 376.7 °C
• Appearance: white crystalline solid
• Density: 1.284[at 20℃]
• Vapor Pressure: 2.11E-19mmHg at 25°C
• Storage Temp.: 2-8°C
• Solubility: Sparingly soluble in water and in propylene glycol, very slightly soluble in ethanol (96 per cent).
• Water Solubility: 0.06 g/100 mL (20 ºC)
• Merck: 14,2091
• CAS DataBase Reference: Chlorhexidine hydrochloride(CAS DataBase Reference)
• NIST Chemistry Reference: Chlorhexidine hydrochloride(3697-42-5)
• EPA Substance Registry System: Chlorhexidine hydrochloride(3697-42-5)

Safety Data

• Hazard Codes: Xn,Xi
• Statements: 22-36/37/38
• Safety Statements: 53-45-61-36-26
• RIDADR: UN 2811 6.1/PG 1
• WGK Germany: 3
• RTECS: MA4375000
• HazardClass: 9
• PackingGroup: III
• Hazardous Substances Data: 3697-42-5(Hazardous Substances Data)

Usage

Chemical Properties

White Crystalline Solid

Uses

Different sources of media describe the Uses of 3697-42-5 differently. You can refer to the following data:
1. antibacterial (topical), disinfectant
2. chlorhexidine dihydrochloride is a preservative, it functions primarily as an anti-microbial, helping control the proliferation of bacteria, fungi, or yeast in a product.
3. It is a bisbiguanide with bacteriostatic activity. Antiseptic; disinfectant

General Description

Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Flammability and Explosibility

Notclassified

InChI:InChI=1/C22H30Cl2N10.2ClH/c23-15-5-9-17(10-6-15)31-21(27)33-19(25)29-13-3-1-2-4-14-30-20(26)34-22(28)32-18-11-7-16(24)8-12-18;;/h5-12H,1-4,13-14H2,(H5,25,27,29,31,33)(H5,26,28,30,32,34);2*1H

Synthetic route

chlorhexidine dihydrochloride (3697-42-5) → 3-[(Z)-4-Chloro-phenylimino]-5-{(Z)-6-[5-[(Z)-4-chloro-phenylimino]-4,5-dihydro-[1,2,4]triazol-(3Z)-ylideneamino]-hexylimino}-4,5-dihydro-3H-[1,2,4]triazole

Conditions	Yield
With potassium hydroxide; bromine In methanol

chlorhexidine dihydrochloride (3697-42-5) + sodium cyclamate (139-05-9) → chlorhexidine dicyclamate

Conditions	Yield
In methanol

Relevant articles and documents

Process for preparing hexamethylene bis-dicyandiamide

Hexamethylene.bis-dicyandiamide is safely prepared in good yield and desired purity by a novel method which comprises reacting N-cyano-O (or S)-alkyl-iso (or isothio) urea with hexamethylenediamine. The desired product is useful as an intermediate of chlorhexidine which is an antibacterial agent.