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HEPTACHLOR
HEPTACHLOR
- CAS:
- 76-44-8
- MF:
- C10H5Cl7
- MW:
- 373.32
Properties
- Melting point:
- 96℃
- Boiling point:
- 458.95°C (rough estimate)
- Density
- 1.6 g/cm3
- vapor pressure
- 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.
Safety Information
- Symbol(GHS)
GHS06,GHS08,GHS09
- Signal word
- Danger
- Hazard statements
- H300+H310-H351-H373-H410
- Precautionary statements
- P202-P260-P273-P280-P301+P310-P302+P352+P310
- Hazard Codes
- T,N,F,Xn
- Risk Statements
- 24/25-33-40-50/53-39/23/24/25-23/24/25-11-67-65-38-51/53
- Safety Statements
- 36/37-45-60-61-62-16-7
- RIDADR
- 2761
- OEB
- C
- OEL
- TWA: 0.5 mg/m3 [skin]
- WGK Germany
- 3
- RTECS
- PC0700000
- HazardClass
- 6.1(a)
- PackingGroup
- II
- Toxicity
- 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.
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