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

Description

Chlorhexidine hydrochloride is a white crystalline solid that belongs to the bisbiguanide class of compounds. It possesses potent antimicrobial properties, making it a widely used agent in various applications due to its ability to control the proliferation of bacteria, fungi, and yeast.

Uses

Used in Pharmaceutical Industry:
Chlorhexidine hydrochloride is used as a pharmaceutical secondary standard for quality control. It provides pharmaceutical laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Used in Topical Antimicrobial Applications:
Chlorhexidine hydrochloride is used as an antiseptic for topical applications, primarily due to its bacteriostatic activity. It helps in controlling the growth of bacteria, fungi, and yeast on the skin, making it a popular choice for wound care and pre-surgical hand disinfection.
Used in Disinfectant Applications:
Chlorhexidine hydrochloride is used as a disinfectant, both in healthcare settings and household products. Its antimicrobial properties allow it to effectively eliminate harmful microorganisms, ensuring a cleaner and safer environment.
Used in Preservative Applications:
Chlorhexidine dihydrochloride is used as a preservative, functioning primarily as an anti-microbial agent. It helps control the growth of bacteria, fungi, and yeast in various products, such as cosmetics, personal care items, and pharmaceutical formulations, thereby extending their shelf life and maintaining their quality.

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.