2.33(x 10-4 mmHg) at 25 °C (subcooled liquid vapor pressure calculated from GC retention time data, Hinckleyet al., 1990)
refractive index ：
1.5407 (estimate)
Flash point:：
11 °C
storage temp. ：
APPROX 4°C
Water Solubility ：
0.056 mg l-1 (25-29 °C)
Merck ：
13,4675
Henry's Law Constant：
0.19(x 10-3 atm?m3/mol) at 5 °C, 0.31 at 15 °C, 0.40 at 20 °C, 0.61 at 25 °C, 0.82 at 35 °C:in 3% NaCl solution: 0.52
at 5 °C, 0.82 at 15 °C, 1.33 at 25 °C, 2.09 at 35 °C (gas stripping-GC, Cetin et al., 2006)
Exposure limits：
NIOSH REL: TWA 0.5 mg/m3, IDLH 35 mg/m3; OSHA PEL: TWA 0.5 mg/m3; ACGIH TLV: TWA 0.5 mg/m3.
Stability:：
Stable. Non-combustible. Incompatible with strong alkali, oxidizing agents. Corrodes many metals.
LD50 in male, female rats (mg/kg): 100, 162 orally (Gaines)
IDLA：
35 mg/m3
Use：
Heptachlor is a soft, white to light tan, waxy, non-combustible, crystalline solid with a camphor-like odour. Heptachlor is a member of the cyclodiene group of chlorinated insecticides (aldrin, dieldrin, endrin, chlordane, heptachlor, and endosulfan) and has a long history following World War II. It was registered as a commercial pesticide in 1952 for foliar, soil, and structure applications and for malarial control programmes; after 1960, it was used primarily in soil applications against agricultural pests and to a lesser extent against termites. Heptachlor is available commercially as a dust, a dust concentrate, an emulsifiable concentrate, a wettable powder, or in oil solutions. It is corrosive to metals and reacts with iron and rust to form hydrogen chloride gas.
