IUPAC Name: 1,1-Dichloroethane
Source: Used as an intermediate in producing vinyl chlorides and 1,1,1-trichloroethane.
Summary: 1,1-Dichloroethane is used in the manufacturing process of other organochlorine compounds such as vinyl chlorides and 1,1,1-trichloroethane and in the production of plastics and adhesives. It is also used as a solvent in paints and degreasers. It exists as a colorless liquid at room temperature. It is soluble in water up to 5,040 mg/L at 25 C and has a density of 1.174 g/mL. Upon decomposition it produces hydrogen chloride gas and carbon oxides. The compound may be present in the air as a degradation product of other organochlorine chemicals. It is classified by the EPA as a Hazardous Air Pollutant (HAPs). In the vapor-phase 1,1-dichloroethane reacts with photochemical hydroxyl radicals and undergoes degradation with a half-life of 59 days. Koc values ranging from 9.2 – 30 indicate it will have high mobility within soil. The compound is expected to be persistent in the environment, as it has a biodegradation half-life of 115 days under sulfate-reducing conditions. Under anaerobic conditions the half-life is shortened to 30-60 days. The half-life for hydrolysis is 61.3 years and will not play a large role in its removal.
GHS Hazard Statement: H225, H302, H315, H319, H332, H333, H335, H336, H341, H370, H373, H402, H411, H412, GHS02, GHS07, GHS08, GHS09