Name:
p-Benzoquinone
Synonym:
p-Benzoquinone; 2,5-Cyclohexadiene-1,4-dione; Quinone; 1,4-Benzoquinone; aromatic cyclic diketone
CAS:
106-51-4
Section 1 - Chemical Product
MSDS Name:p-Benzoquinone
Synonym:p-Benzoquinone; 2,5-Cyclohexadiene-1,4-dione; Quinone; 1,4-Benzoquinone; aromatic cyclic diketone
Synonym:p-Benzoquinone; 2,5-Cyclohexadiene-1,4-dione; Quinone; 1,4-Benzoquinone; aromatic cyclic diketone
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 106-51-4 | Quinone | > 98 | 203-405-2 |
| Hazard Symbols: T N Risk Phrases: 23/25 36/37/38 50 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Irritating to eyes, respiratory system and skin. Very toxic to aquatic organisms.
Potential Health Effects
Eye:
Contact may cause discoloration, redness, swelling, and formation of eye lesions.
Skin:
Causes skin irritation. Depigmentation and skin lesions may occur.
May cause discoloration, erythema (redness), swelling, and the formation of papules and vesicles (blisters). Prolonged contact may lead to necrosis.
Ingestion:
May be fatal if swallowed.
Inhalation:
Harmful if inhaled. Causes respiratory tract irritation. May cause adverse central nervous system effects including headache, convulsions, and possible death. May produce asphyxia due to pulmonary damage and effects on the hemoglobin. May produce clonic convulsions, respiratory difficulties, decreased blood pressure and death due to medullary centers.
Chronic:
Prolonged or repeated exposure may cause permanent eye damage.
Prolonged or repeated contact may cause skin necrosis and/or ulceration of the skin.
Toxic by inhalation and if swallowed. Irritating to eyes, respiratory system and skin. Very toxic to aquatic organisms.
Potential Health Effects
Eye:
Contact may cause discoloration, redness, swelling, and formation of eye lesions.
Skin:
Causes skin irritation. Depigmentation and skin lesions may occur.
May cause discoloration, erythema (redness), swelling, and the formation of papules and vesicles (blisters). Prolonged contact may lead to necrosis.
Ingestion:
May be fatal if swallowed.
Inhalation:
Harmful if inhaled. Causes respiratory tract irritation. May cause adverse central nervous system effects including headache, convulsions, and possible death. May produce asphyxia due to pulmonary damage and effects on the hemoglobin. May produce clonic convulsions, respiratory difficulties, decreased blood pressure and death due to medullary centers.
Chronic:
Prolonged or repeated exposure may cause permanent eye damage.
Prolonged or repeated contact may cause skin necrosis and/or ulceration of the skin.
Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
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.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
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.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Violently decomposes when heated under confinement. Water-wet material can decompose violently above 50-70C (122-158F).
Extinguishing Media:
Use water spray or dry chemical.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Violently decomposes when heated under confinement. Water-wet material can decompose violently above 50-70C (122-158F).
Extinguishing Media:
Use water spray or dry chemical.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Use only non-sparking tools and equipment. Prevent runoff from entering drains, sewers, or streams.
Spills/Leaks:
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Use only non-sparking tools and equipment. Prevent runoff from entering drains, sewers, or streams.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Keep container tightly closed. Use only with adequate ventilation. Avoid breathing dust. Avoid breathing vapor. Keep away from heat and flame. Do not get in eyes. Avoid contact with skin and clothing.
Exercise caution in heating, especially in a closed container.
Storage:
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Keep container tightly closed. Use only with adequate ventilation. Avoid breathing dust. Avoid breathing vapor. Keep away from heat and flame. Do not get in eyes. Avoid contact with skin and clothing.
Exercise caution in heating, especially in a closed container.
Storage:
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 106-51-4: United States OSHA: 0.1 ppm TWA; 0.4 mg/m3 TWA Belgium - TWA: 0.1 ppm VLE; 0.45 mg/m3 VLE France - VME: 0.1 ppm VME; 0.4 mg/m3 VME France - VLE: 0.3 ppm VLE; 1.5 mg/m3 VLE Germany: 0.1 ppm TWA; 0.45 mg/m3 TWA Malaysia: 0.1 ppm TWA; 0.44 mg/m3 TWA Netherlands: 0.1 ppm MAC; 0.4 mg/m3 MAC Russia: 0.05 mg/m3 TWA Spain: 0.1 ppm VLA-ED; 0.45 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
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.
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 106-51-4: United States OSHA: 0.1 ppm TWA; 0.4 mg/m3 TWA Belgium - TWA: 0.1 ppm VLE; 0.45 mg/m3 VLE France - VME: 0.1 ppm VME; 0.4 mg/m3 VME France - VLE: 0.3 ppm VLE; 1.5 mg/m3 VLE Germany: 0.1 ppm TWA; 0.45 mg/m3 TWA Malaysia: 0.1 ppm TWA; 0.44 mg/m3 TWA Netherlands: 0.1 ppm MAC; 0.4 mg/m3 MAC Russia: 0.05 mg/m3 TWA Spain: 0.1 ppm VLA-ED; 0.45 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
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.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: yellow-green
Odor: irritating odor - pungent odor
pH: Not applicable.
Vapor Pressure: 0.9 mm Hg @ 20 deg C
Viscosity: Not available.
Boiling Point: sublimes
Freezing/Melting Point: 115.7 deg C
Autoignition Temperature: 560 deg C ( 1,040.00 deg F)
Flash Point: 77 deg C ( 170.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: 1.5% @ 25C
Specific Gravity/Density: 1.31 g/cm3
Molecular Formula: C6H4O2
Molecular Weight: 108.10
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures. Water-wet material can decompose violently above 50-70C (122-158F).
Conditions to Avoid:
High temperatures, dust generation, moisture.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.
Stable under normal temperatures and pressures. Water-wet material can decompose violently above 50-70C (122-158F).
Conditions to Avoid:
High temperatures, dust generation, moisture.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 106-51-4: DK2625000 LD50/LC50:
CAS# 106-51-4: Oral, mouse: LD50 = 25 mg/kg; Oral, rat: LD50 = 130 mg/kg.
Carcinogenicity:
Quinone - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 106-51-4: DK2625000 LD50/LC50:
CAS# 106-51-4: Oral, mouse: LD50 = 25 mg/kg; Oral, rat: LD50 = 130 mg/kg.
Carcinogenicity:
Quinone - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Fish: Rainbow trout: LC50 = 0.125 mg/L; 96 Hr.; UnspecifiedFish: Fathead Minnow: LC50 = 0.045 mg/L; 96 Hr.; UnspecifiedBacteria: Phytobacterium phosphoreum: EC50 =2.09 mg/L; 5-30 minutes; Microtox test
Fish: Rainbow trout: LC50 = 0.125 mg/L; 96 Hr.; UnspecifiedFish: Fathead Minnow: LC50 = 0.045 mg/L; 96 Hr.; UnspecifiedBacteria: Phytobacterium phosphoreum: EC50 =2.09 mg/L; 5-30 minutes; Microtox test
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: BENZOQUINONE
Hazard Class: 6.1
UN Number: 2587
Packing Group: II
IMO
Shipping Name: BENZOQUINONE
Hazard Class: 6.1
UN Number: 2587
Packing Group: II
RID/ADR
Shipping Name: BENZOQUINONE
Hazard Class: 6.1
UN Number: 2587
Packing group: II
USA RQ: CAS# 106-51-4: 10 lb final RQ; 4.54 kg final RQ
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T N
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
R 50 Very toxic to aquatic organisms.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28A After contact with skin, wash immediately with
plenty of water.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 106-51-4: 2
Canada
CAS# 106-51-4 is listed on Canadas DSL List.
CAS# 106-51-4 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 106-51-4 is listed on the TSCA inventory.
