MSDS Name:Hexachlorocyclopentadiene 98%
Synonym:Perchlorocylopentadiene; 1,2,3,4,5,5-Hexachloro-1,3-cyclopenta- diene

EMERGENCY OVERVIEW
Harmful if swallowed. Toxic in contact with skin. Very toxic by inhalation. Causes burns. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Toxic.Harmful.Moisture sensitive.
Potential Health Effects
Eye:
Causes severe eye irritation. Lachrymator (substance which increases the flow of tears). Causes redness and pain. Lachrymator (substance which increases the flow of tears).
Skin:
Causes severe skin irritation. Harmful if absorbed through the skin.
May be absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause respiratory failure. May cause severe digestive tract irritation with abdominal pain, nausea, vomiting and diarrhea.
Inhalation:
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Toxic if inhaled.
Chronic:
Prolonged or repeated eye contact may cause conjunctivitis. May cause liver and kidney damage. Repeated exposure may cause central nervous system damage.

Eyes: Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Gently lift eyelids and flush continuously with water.
Skin:
Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion:
Do NOT induce vomiting and seek IMMEDIATE MEDICAL ADVICE. Call a poison control center. Wash mouth out with water.
Inhalation:
Get medical aid immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Effects may be delayed.

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is nonflammable. Containers may explode in the heat of a fire.
Extinguishing Media:
Substance is nonflammable; use agent most appropriate to extinguish surrounding fire. Use water fog, dry chemical, carbon dioxide, or regular foam.

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Provide ventilation.

Handling:
Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Corrosives area. Do not store in aluminum containers.

Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 77-25-8: Personal Protective Equipment Eyes: Wear chemical goggles and a face shield if splashing is possible.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State: Liquid
Color: clear yellow
Odor: Pungent odor.
pH: Not available.
Vapor Pressure: .1 mbar @ 20 deg C
Viscosity: 5.6 cPs 30 deg C
Boiling Point: 239 deg C @ 753.00mm Hg
Freezing/Melting Point: -10 deg C
Autoignition Temperature: Not available.
Flash Point: 202 deg F ( 94.44 deg C)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: SOLUBLE IN WATER: 0.13 MG/L (25C)
Specific Gravity/Density: 1.7020g/cm3
Molecular Formula: C5Cl6
Molecular Weight: 272.76

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, temperatures above 50C (122F), exposure to moist air or water.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Hydrogen chloride, carbon monoxide, carbon dioxide, hydrogen gas.
Hazardous Polymerization: Will not occur.

RTECS#:
CAS# 77-25-8 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Diethyl diethylmalonate - Not listed by ACGIH, IARC, or NTP.

Ecotoxicity:
LC50(fathead minnows, early juvenile):6.7 ??g/L/30 days LC50(fathead minnows, larval):7 ??g/L/96H Water danger/protection: WGK=2

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
Shipping Name: HEXACHLOROCYCLOPENTADIENE
Hazard Class: 6.1
UN Number: 2646
Packing Group:
IMO
Shipping Name: HEXACHLOROCYCLOPENTADIENE
Hazard Class: 6.1
UN Number: 2646
Packing Group: I
RID/ADR
Shipping Name: HEXACHLOROCYCLOPENTADIENE
Hazard Class: 6.1
UN Number: 2646
Packing group: I

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ N
Risk Phrases:
R 22 Harmful if swallowed.
R 24 Toxic in contact with skin.
R 26 Very toxic by inhalation.
R 34 Causes burns.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 53 Avoid exposure - obtain special instructions
before use.
S 25 Avoid contact with eyes.
S 39 Wear eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 77-25-8: No information available.
Canada
CAS# 77-25-8 is listed on Canadas NDSL List.
CAS# 77-25-8 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 77-25-8 is listed on the TSCA inventory.