Hexachlorocyclopentadiene
- CAS No.
- 77-47-4
- Chemical Name:
- Hexachlorocyclopentadiene
- Synonyms
- hccp;C 56;c-56;Hccpd;hrs1655;HRS 1655;Graphlox;NCI-C55607;rcrawastenumberu130;hexachloropentadiene
- CBNumber:
- CB3432075
- Molecular Formula:
- C5Cl6
- Molecular Weight:
- 272.77
- MOL File:
- 77-47-4.mol
- Modify Date:
- 2024/3/14 15:18:26
| Melting point | −10 °C(lit.) |
|---|---|
| Boiling point | 239 °C753 mm Hg(lit.) |
| Density | 1.702 g/mL at 25 °C(lit.) |
| vapor pressure | 0.13 psi ( 20 °C) |
| refractive index |
n |
| Flash point | 109 °C |
| storage temp. | 2-8°C |
| solubility | Chloroform (Sparingly), Ethyl Acetate (Slightly) |
| form | Yellow to amber-colored liquid |
| color | Colourless to Pale Yellow |
| Water Solubility | 805ug/L(22.5 ºC) |
| Henry's Law Constant | 1.64(x 10-2 atm?m3/mol) at 25 °C (gas stripping-GC, Warner et al., 1987) 1.6(x 10-2 atm?m3/mol) (Pankow and Rosen, 1988) |
| Exposure limits | NIOSH REL: 10 ppb (100 mg/m3); ACGIH TLV: TWA 0.01 ppm (adopted), 0.002 mg/m3 ppm (skin). |
| Dielectric constant | 2.9100000000000001 |
| Stability | Stability Stable, but light-sensitive. Non-flammable. Very reactive with alkenes and polynuclear hydrocarbons. Explosive with sodium. Incompatible with strong oxidizing agents, most common metals. |
| CAS DataBase Reference | 77-47-4(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-(77-47-4) |
| EPA Substance Registry System | Hexachlorocyclopentadiene (77-47-4) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS05, GHS06, GHS09 |
|---|---|
| Signal word | Danger |
| Hazard statements | H302-H311-H314-H330-H410 |
| Precautionary statements | P260-P273-P280-P284-P305+P351+P338-P310 |
| Hazard Codes | T+,N,T,F |
| Risk Statements | 22-24-26-34-50/53-39/23/24/25-23/24/25-52/53-11 |
| Safety Statements | 23-39-45-61-60-53-25-36/37-16 |
| RIDADR | UN 2646 6.1/PG 1 |
| OEB | D |
| OEL | TWA: 0.01 ppm (0.1 mg/m3) |
| WGK Germany | 3 |
| RTECS | GY1225000 |
| F | 10-23 |
| HazardClass | 6.1(a) |
| PackingGroup | I |
| Toxicity | Drinking water standard (final): MCLG: 50 μg/L:MCL: 50 μg/L. In addition, a DWEL of 200 μg/L was recommended (U.S. EPA, 2000). |
Hexachlorocyclopentadiene price More Price(4)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| ottokemi | H 1311 | Hexachlorocyclopentadiene 98% | 77-47-4 | 1mL | ₹18099 | 2022-05-26 | Buy |
| ottokemi | H 1311 | Hexachlorocyclopentadiene 98% | 77-47-4 | 5ml | ₹39069 | 2022-05-26 | Buy |
| ottokemi | H 1311 | Hexachlorocyclopentadiene 98% | 77-47-4 | 100mL | ₹480699 | 2022-05-26 | Buy |
| ottokemi | H 1311 | Hexachlorocyclopentadiene 98% | 77-47-4 | 250ML | ₹960399 | 2022-05-26 | Buy |
Hexachlorocyclopentadiene Chemical Properties,Uses,Production
Description
Hexachlorocyclopentadiene is a pale-yellow/lemon-yellow liquid with a characteristic musty or pungent odour (odour threshold – 0.03 ppm). Hexachlorocyclopentadiene does not occur naturally but is a manufactured chemical. It easily evaporates into the air. Hexachlorocyclopentadiene is the key intermediate in the manufacture of some pesticides, including heptachlor, chlordane, aldrin, dieldrin, and endrin. Hexachlorocyclopentadiene is also used in the manufacture of flame retardants and some resins, shock-proof plastics, fluorocarbons, and dyes. Hexachlorocyclopentadiene quickly breaks down by sunlight and reacts with other chemicals in the air.
Chemical Properties
Hexachlorocyclopentadiene is a pale-yellow to amber-colored, oily liquid. Pungent, unpleasant odor. The odor threshold is 0.15 0.33 ppm. Insoluble in water, soluble in ether, carbon tetrachloride and other organic solvents.
Uses
Hexachlorocyclopentadiene is an organochlorine compound that is used to manufacturing organochlorine insecticides and acaricides, such as mirex, aldrin, dieldrin, chlordane, endosulfan, etc. It is also used to make flame retardants, resins that won't burn, shock-proof plastics, esters, ketones, fluorocarbons, and dyes.
Application
Hexachlorocyclopentadiene(Hex) is an Intermediate in the manufacture of chlorinated pesticides and flame retardants. The principal end use for Hex is as a key intermediate in the production of chlorinated cyclodiene pesticides, including aldrin, dieldrin, endrin, chlordane, heptachlor, kepone, endosulfan, pentac, isodrin, and mirex. It is also used as an intermediate in the manufacture of flame retardants such as Dechlorane Plus and chlorendic anhydride and, to a lesser extent, in the manufacture of nonflammable resins, polyester resins, pharmaceuticals, unbreakable plastics, acids, esters, ketones, fluorocarbons, and dyes.
Preparation
Hexachlorocyclopentadiene is obtained by chlorination of cyclopentadiene in two steps. In addition, using petroleum pentane as raw material, hexachlorocyclopentadiene is synthesized by photochlorination and high temperature chlorination, and the yield is about 70%.
General Description
A pale yellow liquid with a pungent odor. Density 14.3 lb /gal. Solidifies at 50°F. Insoluble in water. Noncombustible. Very toxic by skin absorption and inhalation. Corrosive to tissue.
Air & Water Reactions
Insoluble in water. Reacts slowly with water to form hydrochloric acid.
Reactivity Profile
Hexachlorocyclopentadiene is incompatible with strong oxidizing and reducing agents. Also incompatible with many amines, nitrides, azo/diazo compounds, alkali metals (sodium), and epoxides.
Health Hazard
Hexachlorocyclopentadiene is very toxic and may be fatal if inhaled, swallowed, or absorbed through the skin. The probable human lethal dose is 50-500 mg/kg, or between 1 teaspoon and 1 ounce for a 150 lb. (70 kg) person. Severe exposure induces pulmonary hyperemia and edema, degenerative and necrotic changes in brain, heart and adrenal glands and necrosis of liver and kidney tubules. Questionable carcinogen.
Fire Hazard
Toxic hydrogen chloride, chlorine, and phosgene gases may form in fires. In presence of moisture, will corrode iron and other materials; flammable and explosive hydrogen gas may collect in enclosed space. Will corrode iron and other metals in the presence of moisture. Reacts slowly with water to form hydrochloric acid; however, the reaction is not hazardous. Hazardous polymerization may not occur.
Safety
Hexachlorocyclopentadiene is a manufactured chemical that does not occur naturally. Hex has no end uses of its own, and is very toxic following acute (short-term) oral and inhalation exposures. It easily evaporates into the air; the vapor looks like a blue haze. Most of the Hexachlorocyclopentadiene in the environment results from its release during production and disposal. Animal tests suggest that very high levels can cause death. Human data are limited, but it can cause headaches and irritate the nose, throat, eye, and skin.
Potential Exposure
Hexachlorocyclopentadiene is used to produce the flame retardant chlorendic anhydride, which has applications in polyesters; and to produce chlorendic anhydride and chlorendic acid; which is used as a flame retardant in resins. Hexachlorocyclopentadiene is also used as an intermediate in the production of pesticides, such as aldrin, dieldrin, and endosulfan.
Shipping
UN2646 Hexachlorocyclopentadiene, Hazard Class: 6.1; Labels: 6.1-Poison Inhalation Hazard, Inhalation Hazard Zone B.
Purification Methods
Dry the diene with MgSO4, filter, and distil it under vacuum in a nitrogen atmosphere. Irritates skin and eyes, HIGHLY TOXIC. [McBee et al. J Am Chem Soc 77 4378 1955, UV spectra: Idol et al. J Org Chem 20 1746 1955, Beilstein 5 III 308, 5 IV 381.]
Incompatibilities
Reacts slowly with water to form hydro chloric acid; will corrode iron and most metals in presence of moisture. Explosive hydrogen gas may collect in enclosed spaces in the presence of moisture. Contact with sodium may be explosive.
Waste Disposal
Incineration after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids pro duced. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must con form to EPA regulations governing storage, transportation, treatment, and waste disposal.
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