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Section 1 - Chemical Product
MSDS Name:Pyrocatechol 98% (Titr.) Material Safety Data Sheet
Synonym:O-Benzenediol; 1,2-Benzenediol; O-Dihydroxybenzene; 1,2-Dihydroxybenzene; O-Dioxybenzene; Pyrocatechol
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
|| Chemical Name
Hazard Symbols: XN
Risk Phrases: 21/22 36/38
Section 3 - HAZARDS IDENTIFICATION
Harmful in contact with skin and if swallowed. Irritating to eyes and skin.Corrosive.
Potential Health Effects
Causes eye burns. May cause chemical conjunctivitis and corneal damage.
Harmful if absorbed through the skin. Causes skin burns. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. If absorbed, causes symptoms similar to those of ingestion. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause perforation of the digestive tract.
May cause methemoglobinemia, cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), convulsions, and death.
May cause central nervous system depression. May cause systemic effects.
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Causes chemical burns to the respiratory tract. May cause effects similar to those described for ingestion. Aspiration may lead to pulmonary edema. May cause systemic effects.
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis (bluish skin due to deficient oxygenation of blood), rapid heart rate, unconsciousness and possible death. Effects may be delayed.
Section 4 - FIRST AID MEASURES
Eyes: Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse. Destroy contaminated shoes.
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Notes to Physician:
Absorption of this product into the body may cause cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood).
Moderate degrees of cyanosis need to be treated only by supportive measures: bed rest and oxygen inhalation. For methemoglobinemia, administer oxygen alone or with Methylene Blue depending on the methemoglobin concentration in the blood. Cleansing of the entire contaminated area of the body is of utmost importance.
Section 5 - FIRE FIGHTING MEASURES
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes.
Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.
Cool containers with flooding quantities of water until well after fire is out.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Provide ventilation.
Section 7 - HANDLING and STORAGE
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Discard contaminated shoes.
Keep container closed when not in use. Material can ignite if dry.
Do not allow material to completely dry. Keep from contact with oxidizing materials. Corrosives area. Store in a cool, dry area away from incompatible substances.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 120-80-9: United Kingdom, WEL - TWA: 5 ppm TWA; 23 mg/m3 TWA United Kingdom, WEL - STEL: 15 ppm STEL; 69 mg/m3 STEL Belgium - TWA: 5 ppm VLE; 23 mg/m3 VLE France - VME: 5 ppm VME; 20 mg/m3 VME Germany: 20 mg/m3 TWA (inhalable fraction) Germany: Skin absorber Malaysia: 5 ppm TWA; 23 mg/m3 TWA Netherlands: 5 ppm MAC; 20 mg/m3 MAC Spain: 5 ppm VLA-ED; 23 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Wear appropriate protective gloves to prevent skin exposure.
Wear appropriate protective clothing to prevent skin exposure.
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid
pH: Not available.
Vapor Pressure: 5 mm Hg @ 104C
Viscosity: Not applicable.
Boiling Point: 245 deg C
Freezing/Melting Point: 105 deg C
Autoignition Temperature: Not available.
Flash Point: 127 deg C ( 260.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water.
Specific Gravity/Density: 1.1493
Molecular Formula: C6H6O2
Molecular Weight: 110.11
Section 10 - STABILITY AND REACTIVITY
Stable. Substance undergoes color change upon exposure to light and air.
Conditions to Avoid:
Dust generation, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong reducing agents, strong acids, strong bases.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
CAS# 120-80-9: UX1050000 LD50/LC50:
CAS# 120-80-9: Oral, mouse: LD50 = 260 mg/kg; Oral, mouse: LD50 = 100 mg/kg; Oral, rat: LD50 = 260 mg/kg; Oral, rat: LD50 = 3890 mg/kg; Skin, rabbit: LD50 = 800 mg/kg; Skin, rabbit: LD50 = 800 mg/kg.
Pyrocatechol - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to California: carcinogen, initial date 7/15/03 IARC: Group 2B carcinogen Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
Shipping Name: Not regulated.
Shipping Name: Not regulated.
Shipping Name: Not regulated.
USA RQ: CAS# 120-80-9: 100 lb final RQ; 45.4 kg final RQ
Section 15 - REGULATORY INFORMATION
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
R 21/22 Harmful in contact with skin and if
R 36/38 Irritating to eyes and skin.
S 22 Do not breathe dust.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 37 Wear suitable gloves.
WGK (Water Danger/Protection)
CAS# 120-80-9: 2
CAS# 120-80-9 is listed on Canada's DSL List.
CAS# 120-80-9 is listed on Canada's Ingredient Disclosure List.
CAS# 120-80-9 is listed on the TSCA inventory.
SECTION 16 - ADDITIONAL INFORMATION