CAS:32289-58-0 Poly(hexamethylenebiguanide) hydrochloride

Superiority:

Specification

Chemical and Physical Specifications
Chemical name: Polyhexamethylene biguanide hydrochloride (PHMB)
INCI Name: Polyaminopropyl Biguanide
Other chemical names
Poly(hexamethylenebiguanide hydrochloride)
Poly(iminocarbonimidoyliminocarbonimidoylimino-1,6-hexanediyl), hydrochloride
Poly(iminoimidocarbonyl-iminoimidocarbonyl-iminohexamethylene), hydrochloride
Poly(iminoimidocarbonyliminoimidocarbonyliminohexamethylene) hydrochloride

CAS: 32289-58-0 / 27083-27-8 / 28757-47-3 / 133029-32-0
Molecular formula: (C8H17N5)n.nHCl , n=1-40
Molecular weight> 700 g/mol (submission)
2670 – 2960 (weight average molecular weight)
3686 – 4216 (weight average molecular weight)
HS Code: 2921229000

Physical form:
Off-white to pale yellow powder with strong ammonia smell at 20° C and

101.3 kPa
Very pale yellow to pale yellow, lumpy solid; no obvious odor.
Pale-yellow glass-like solid (technical grade PHMB).
Solubility: soluble in water.
Stability: stable.
Risk: irritation, irritation to skin, eye.
Ecology: May be hazardous to environment. Water body should be given special attention.
Biodegradability: Biodegradable.
Function and uses
PHMB is supported under Directive 98/8/EC for uses as a disinfectant
PHMB is used as a preservative and as an antimicrobial agent. As a preservative, PHMB is
used in cosmetics, personal care products, fabric softeners, contact lens solutions, hand
washes, and more.

In cosmetics, PHMB is used as a broad spectrum preservative. It is freely water soluble and therefore widely used in water-based products which are most susceptible tomicroorganism growth. It has an excellent activity against a wide range of Gram positive and Gram negative bacteria, fungi and yeasts and is particularly effective against microorganisms such as Pseudomanas species, which are difficult to control.

PHMB is also used to preserve wet wipes; to control odour in textiles; to prevent microbial contamination in wound irrigation and sterile dressings; to disinfect medical/dental utensil and trays, farm equipment, animal drinking water, and hard surfaces for food handling institutions and hospitals; and to deodorize vacuums and toilets. PHMB is used in antimicrobial hand washes and rubs and air filter treatments as an alternative to ozone.

PHMB is also used as an active ingredient for recreational water treatment, as a chlorinefree polymeric sanitizer, which is effective against a wide variety of microorganisms.

Further reported uses of PHMB are purification of swimming pool water, beer glass sanitisation, solid surface disinfection in breweries and short-term preservation of hides and skins.

Application :
It is an antiseptic and bactericide. This is broad-spectrum antibacterial fugicide, take effective for kill gram-positive bacteria, gram-negative bacteria, fungus and yeast; usually used for swimming pool bactericide, universal detergent and disinfector as a fugicide.Compare with PHMG, it has a better bacteriostasis effect for Aspartate bacillis, beer yeast and Aspergillus niger than PHMG.