1. International Chemical Safety Card (ICSC) 0126 (see, e.g. http://siri.uvm.edu/msds/).
2. ICSC 0007.
3. ICSC 0053, calculated from the value of 0.5 mg/m3.
4. E.J. Calabrese, E.M. Kenyon, Air Toxics and Risk Assessment, Lewis Publishers, Chelsea, MI, 1991.
5. The International Programme on Chemical Safety (IPCS), Environmental Health Criteria 21: Chlorine and Hydrogen Chloride, World Health Organization, Geneva, 1982.