undergone formal Agency review. The complete reference listings for 

 the citations in this section are provided in Service Code 5. The user 

 is urged to read Background Document 5 in Service Code 5 for further 

 information on the sources and limitations of the data presented here. 



VA. ACUTE HEALTH HAZARD INFORMATION 



Toxicity -- Lindane is a stimulant of the nervous system, causing violent 

 convulsions that are rapid in onset and generally followed by death or 

 recovery within 24 hours (Hayes, 1982, p. 218). The probable human 

 oral lethal dose is 50-500 mg/kg, or between 1 teaspoon and 1 ounce 

 for a 150-lb (70 kg) person (Gosselin et al., 1984, p. 11-286). 

 Medical Conditions Generally Aggravated by Exposure - Not Found 

 Signs and Symptoms of Exposure - Contact with eyes or skin may 

 produce irritation (DASE, 1980, p. 529). Vomiting, faintness, tremor, 

 restlessness, muscle spasms, unsteady gait, and convulsions may occur 

 as a result of exposure. Elevated body temperature and pulmonary 

 edema have been reported in children. Coma, respiratory failure, and 

 death can result. Exposure to vapors of this compound or its thermal 

 decomposition products may lead to headache, nausea, vomiting, and 

 irritation of the eyes, nose, and throat (Gosselin et al., 1984, pp. III-240, 

 241). 



V.B. PHYSICAL-CHEMICAL PROPERTIES 



Chemical Formula - C6H6C16 (Weast 1979, p. C-262) 



Molecular Weight -- 290.83 (Weast 1979, p. C-262) 



Boiling Point - 614F, 323.4C (Weast, 1979, p. C-262); Decomposes 



(NIOSH/OSHA, 1978, p. 120) 



Specific Gravity (H20 = 1) - 1.9 (DASE, 1980, p. 529) 



Vapor Pressure (mmHg) - 9.4 x 10-6 at 20C (Merck, 1983, p. 789) 



Melting Point - 234.5F, 112.5C (Weast, 1979, p. C-262) 



Vapor Density (AIR = 1) - Not Found 



Evaporation Rate (Butyl acetate = 1) - Not Found 



Solubility in Water - Insoluble (Weast, 1979, p. C-262) 



Flash Point (Method Used) -- Not Found 



Flammable Limits: 



LEL - Not Found 



UEL- Not Found 



Appearance and Odor -- Colorless solid with a musty odor; pure 



material is odorless (NIOSH/OSHA, 1978, p. 120). 



Conditions to Avoid — Not Found 



Hazardous Decomposition or Byproducts — Thermal decomposition 



products may include chlorine, hydrochloric acid, and phosgene (Sax, 



1984, p. 366). Use -- Lindane is used as a pesticide (Hawley, 1981, p. 



617) and scabicide (Hayes, 1982, p. 221). 



VI. REFERENCES 



Substance Name - gamma-Hexachlorocyclohexane (gamma-HCH) 



Primary Synonym - Lindane 



CASRN - 58-89-9 



Not available at this time 



SYNONYMS: cyclohexane, 1,2,3,4,5,6-hexachloro-, gamma-isomer; 

 aalindan; aficide; agrisol g-20; agrocide; agrocide 2; agrocide 7; 

 agrocide 6g; agrocide iii; agrocide wp; agronexit; ameisenatod; 

 ameiscnmittcl merck; aparasin; aphtiria; aplidal; arbitex; bbh; ben- 

 hex; bcntox 10; benzene hexachloride-gamma-isomer; gamma-ben- 



