Disinfectants propylene glycol

Chemical disinfectants are limited in their use as air sterilants because of their irritant properties when sprayed. However, some success has been achieved with atomized propylene glycol at a concentration of 0.05-0.5 mgH and quaternary ammonium compounds (QACs) at 0.075% m be used. For areas which can be effectively sealed off for fumigation purposes, formaldehyde gas at a concentration of 1-2 mg H of air at a relative humidity of 80-90% is effective. 

Alcohols Denature proteins when mixed with water Isopropyl alcohol is used to disinfect skin, and ethylene and propylene glycol are used in aerosols... 

Chemical disinfectants are limited in their use as air sterilants because of their irritant properties when sprayed. However, some success has been achieved with atomized propylene glycol at a con-... 

Propylene glycol (Figure 12.11), also known as 1,2-propanediol and 1,2-dihydroxypropane, has a molecular weight of 76.1. It is used as an antimicrobial preservative (at 15-30%), a disinfectant, a humectant (at 15%), a solvent or co-solvent, and a stabilizer for vitamins, both in... 

Water baths may become contaminated by the cultures that are incubated in them (201) therefore precautions are needed to prevent growth of organisms that can present a hazard or cause cross-contamination problems. Water baths used to inactivate or incubate hazardous substances should contain a disinfectant, such as chlorine bleach (0.8 ml per liter of water) or a phenolic detergent (8 ml per liter). The phenolic detei nt is preferred as it is less corrosive and more stable than chlorine (see Chapter 5). For chilled water baths, 70 percent propylene glycol is recommended (209, 479). Sodium azide should not be used as a bacteriostatic agent, as it creates a serious explosion hazard. 

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