PHMG

Details:

Description  

PHMG (full name: polyhexamethyleneguanidine hydrochloride) is cationic polymer bactericide based on guanidine salts, and it is already proved to be a broad spectrum, fast-acting and long-acting. PHMG is very very safe for using as disinfectant and sanitizer.  

 

Main Characteristics

Broad spectrum, long-acting, high temperature stability;

Non-toxic, non-irritating, non-corrosive;

VOC free, odor free, environmentally-friendly;

Bacterial resistance is not to occur.

 

How PHMG works

PHMG is high molecular polymer, and its hydrophilic group is with strong positive charge when ionized in water. Bacteria is mostly with negative charge and will be absorbed by PHMG, which will inhibit the liposome synthesis of bacteria’s cell membrane to control cell division and finally kill the bacteria. This is why PHMG is more safe than other disinfectants based on chlorine.

 

Bactericidal Rate

Microorganism	PHMG Concentration	Time for 99.9% bactericidal rate
Staphylococcus aureus	0.05%	10 min
	0.2%	1 min
E.coli	0.05%	10 min
	0.2%	1 min
P.aeruginosa	0.05%	10 min
	0.2%	1 min
Candida albicans	0.05%	10 min
	0.2%	1 min

 

 

Physical & Chemical Properties   

Molecular formula	(C7H15N3)n.x(HCl)
Molecular Structure	n=6-18
Molecular Weight	1000 ~ 3000
Appearance	Colorless or light yellow transparency liquid, odorless
PHMG Content	25%
Water	75%
Flash Point	Boils without flashing
Boiling Point	About 102ºC
pH at 25ºC	7 ~ 9
Density at 25ºC	1.04 - 1.06g/cm3
Foaming	Almost no

 

Application

Disinfectant, sanitizer, etc.

 

Compatibility

1) Effective and stable at pH 2 - 11.

2) Compatible with non-ionic surfactant, cellulose thickner, glycol, glycol ether, most of strong acids and common chelating agents such as EDTA, NTA.

3) Limited compatibility with anionic surfactant, strong alkali, complex phosphates and strong oxidizers.

 

Cautions

Do not use PHMG together with anionic detergent. 

 

Storage and Shelf life

Above 0ºC, 2 years