tert-butyl hydroperoxide
CAS No.: 75-91-2
Synonyms:
Formula: C4H10O2
Exact Mass: 90.06810
Molecular Weight: 90.12100
PSA: 29.46000
LogP: 1.27450
tert-butyl hydroperoxide 75-91-2 MSDS
Name: tert-Butyl hydroperoxide 70% Material Safety Data Sheet
Synonym: 1,1-Dimethylethyl hydroperoxide; 2-hydroperoxy-2-methylpropane, TBHP-70
CAS: 75-91-2
Section 1 - Chemical Product   MSDS Name:tert-Butyl hydroperoxide 70% Material Safety Data Sheet
Synonym:1,1-Dimethylethyl hydroperoxide; 2-hydroperoxy-2-methylpropane, TBHP-70

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
75-91-2 Tert-butyl hydroperoxide 70 200-915-7
Hazard Symbols: O C
Risk Phrases: 20/21/22 34 8

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Harmful by inhalation, in contact with skin and if swallowed. Causes burns. Contact with combustible material may cause fire.Corrosive.
Potential Health Effects
Eye:
Causes eye burns. May cause eye injury.
Skin:
Harmful if absorbed through the skin. Causes skin burns. May cause allergic contact dermatitis.
Ingestion:
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
Inhalation:
May cause allergic respiratory reaction. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
None

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
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.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
Evacuate area and fight fire from a safe distance. As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Containers may explode in the heat of a fire. Flammable liquid and vapor. Vapors may be heavier than air.
They can spread along the ground and collect in low or confined areas.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use dry chemical, carbon dioxide, or alcohol-resistant foam. Do NOT use halogenated agents.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Scoop up with a nonsparking tool, then place into a suitable container for disposal. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as saw dust. Use a spark-proof tool.
Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Use spark-proof tools and explosion proof equipment. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with clothing and other combustible materials. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from sources of ignition. Do not store near combustible materials. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Flammables-area. Keep refrigerated. (Store below 4C/39F.)

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. Use explosion-proof ventilation equipment.
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.
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Appearance: clear
Odor: None reported.
pH: Not available.
Vapor Pressure: 174 mm Hg @ 20 C
Viscosity: Not available.
Boiling Point: 40 deg C @ 23mm
Freezing/Melting Point: -35 deg C
Autoignition Temperature: Not applicable.
Flash Point: 26.7 deg C ( 80.06 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Slightly soluble in water.
Specific Gravity/Density: 0.8960 @ 20 C
Molecular Formula: C4H10O2
Molecular Weight: 90.07

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Mechanical shock, ignition sources, combustible materials, reducing agents, temperatures above 75C (167F).
Incompatibilities with Other Materials:
Strong reducing agents, finely powder metals, strong acids, strong bases, molecular sieves, and 1,2-dichloroethane.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 75-91-2: EQ4900000 LD50/LC50:
CAS# 75-91-2: Draize test, rabbit, eye: 100 mg/24H Moderate; Draize test, rabbit, eye: 70 uL Severe; Draize test, rabbit, skin: 500 mg/24H Severe; Inhalation, mouse: LC50 = 350 ppm/4H; Inhalation, rat: LC50 = 500 ppm/4H; Oral, mouse: LD50 = 320 mg/kg; Oral, rat: LD50 = 370 mg/kg; Skin, rabbit: LD50 = 460 uL/kg; Skin, rat: LD50 = 790 mg/kg.
Carcinogenicity:
Tert-butyl hydroperoxide - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: ORGANIC PEROXIDE, TYPE F, LIQUID
Hazard Class: 5.2
UN Number: 3109
Packing Group: II
IMO
Shipping Name: ORGANIC PEROXIDE, TYPE F, LIQUID
Hazard Class: 5.2
UN Number: 3109
Packing Group: II
RID/ADR
Shipping Name: ORGANIC PEROXIDE, TYPE F, LIQUID
Dangerous Goods Code: 5.2(02D)
UN Number: 3109

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: O C
Risk Phrases:
R 20/21/22 Harmful by inhalation, in contact with
skin and if swallowed.
R 34 Causes burns.
R 8 Contact with combustible material may cause
fire.
Safety Phrases:
S 3 Keep in a cool place.
S 28 After contact with skin, wash immediately
with...
WGK (Water Danger/Protection)
CAS# 75-91-2: No information available.
United Kingdom Occupational Exposure Limits
Canada
CAS# 75-91-2 is listed on Canada's DSL List.
CAS# 75-91-2 is listed on Canada's Ingredient Disclosure List.
Exposure Limits
CAS# 75-91-2: OEL-GERMANY
OEL-RUSSIA:STEL 5 mg/m3;Skin
US FEDERAL
TSCA
CAS# 75-91-2 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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