Solvents which are free from fire or toxicity hazards and are nondamaging to surfaces or materials being cleaned. This term is often misused. Depending on the conditions of use, none of these criteria may be met by so-called "safety solvents". For example, petroleum hydrocarbons are effective solvents, low in toxicity, and inexpensive but have relatively low flash and fire points. The following conditions must be kept in mind by users of "safety solvents": 1.The toxicological effects alone are not adequate to assess the hazard potential of a solvent. 2.The vapor pressure, ventilation, and manner of usage will determine the concentration in air. 3.Handling procedures and type of clothing will determine the degree of skin contact and absorption. 4.Ignition temperature, flash point, and other factors determining the potential for fire and explosion must be considered.