Hexachlorocyclopentadiene

CAS 77-47-4 C₅Cl₆ MW 272.8000 Danger
Corrosion Corrosion
Skull and Crossbones Skull and Crossbones
Exclamation Mark Exclamation Mark
Health Hazard Health Hazard
Environment Environment
Emergency: 911 | Poison Control: 1-800-222-1222

Hazard Statements

CodeStatementHazard Class
H302 Harmful if swallowed Acute toxicity, oral
H311 Toxic in contact with skin Acute toxicity, dermal
H314 Causes severe skin burns and eye damage Skin corrosion/irritation
H317 May cause an allergic skin reaction Sensitization, Skin
H318 Causes serious eye damage Serious eye damage/eye irritation
H330 Fatal if inhaled Acute toxicity, inhalation
H336 May cause drowsiness or dizziness Specific target organ toxicity, single exposure; Narcotic effects
H370 Causes damage to organs Specific target organ toxicity, single exposure
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure
H373 May causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard

Precautionary Statements

CodeStatement
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P261 Avoid breathing dust/fume/gas/mist/vapors/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash hands [and ...] thoroughly after handling.
P264+P265 Wash hands [and ...] thoroughly after handling. Do not touch eyes.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P284 [In case of inadequate ventilation] Wear respiratory protection.
P301+P317 IF SWALLOWED: Get medical help.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302+P352 IF ON SKIN: wash with plenty of water/...
P302+P361+P354 IF ON SKIN: Take off Immediately all contaminated clothing. Immediately rinse with water for several minutes.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
P308+P316 IF exposed or concerned: Get emergency medical help immediately.
P316 Get emergency medical help immediately.
P317 Get emergency medical help.
P319 Get medical help if you feel unwell.
P320 Specific treatment is urgent (see ... on this label).
P321 Specific treatment (see information on this label and safety datasheet)).
P330 Rinse mouth.
P333+P317 If skin irritation or rash occurs: Get medical help.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P362+P364 Take off contaminated clothing and wash it before reuse.
P363 Wash contaminated clothing before reuse.
P391 Collect spillage.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to ...

Exposure Limits

NIOSH REL0.01 ppm
Skin NotationYes — can be absorbed through skin

Physical Properties

Pale-yellow to amber-colored liquid with a pungent, unpleasant odor.

Boiling Point462°F
Vapor Pressure0.08 mmHg at 77°F
Specific Gravity1.71

Target Organs

Lungs Skin Eyes

mucous membrane and skin irritation

Synonyms

HCCPD; hexachloro-1,3-cyclopentadiene; 1,2,3,4,5,5-hexachloro-1,3-cyclopentadiene; perchlorocyclopentadiene

Data Sources

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

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