Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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TBHP(75-91-2)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
TBHP
Synonyms
1,1-Dimethylethylhydroperoxide
2-Hydroperoxy-2-methylpropane
Ethyldiethylperoxide
Luperox TBH 70X
N,N-Bis(1-methylethyl)formamide
N,N-Di(propan-2-yl)formamide
Perbutyl H 69T
tert-Butyl hydroperoxide, not more than 80% in Di-tert-butyl peroxide and/or solvent
CAS
2700-30-3
CAS
75-91-2
Formula
C4H10O2
Formula
C7H15NO
Molecular Weight
90.12
Molecular Weight
129.19999999999999
EINECS
200-915-7
EINECS
220-284-1
RTECS
EQ4900000
RTECS Class
Mutagen; Primary Irritant
Merck
13,1569
Beilstein/Gmelin
1745406
Beilstein/Gmelin
1098280
Beilstein Reference
4-01-00-01616
Beilstein Reference
4-04-00-00515

Physical and Chemical Properties

Appearance
Water-white liquid.
Appearance
Yellow liquid.
Solubility in water
Slightly soluble
Solubility in water
Soluble
Melting Point
5.5
Boiling Point
156
Boiling Point
196
Vapor Pressure
0.42 (25 C)
Vapor Pressure
5 (25 C)
Density
0.791 g/cm3 (20 C)
Density
0.89 g/cm3 (20 C)
pKa/pKb
12.8 (pKa)
Partition Coefficient
.75
Heat Of Vaporization
43.2 kJ/mol
Heat Of Vaporization
49.60 kJ/mol
Heat Of Combustion
-2738 kJ/mol
Usage
Catalyst in polymerization reactions.
Vapor Density
2.07
Odor threshold
Odorless
Refractive Index
1.402 (20 C)
Refractive Index
1.44 (20 C)

First Aid Measures

Ingestion
DO NOT INDUCE VOMITING. Corrosive chemicals will destroy the membranes of the mouth, throat, and esophagus and volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting. Thus, the risk of increasing the medical problems by inducing vomiting of a volatile corrosive chemical is very high. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital.
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.
Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
Inhalation
Inhalation of vapor may cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Skin
No information regarding skin irritation and other potential effects was found.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
Eyes
No information regarding eye irritation and other potential effects was found. Vapors may cause eye irritation.
Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion
The toxicological properties of this substance have not been fully investigated.
Inhalation
Stridor, dyspnea, upper airway injury, and pulmonary edema, especially following inhalation of vaporized caustics, may occur.
Skin
Severe skin irritation and/or burns may occur.
Eyes
See Inhalation.
Ingestion
Burns of the esophagus and less commonly the stomach may occur after caustic ingestion; the absence of oral mucosal injury does not reliably exclude esophageal burns. Patients with stridor, drooling or vomiting are more likely to have esophageal burns.
Hazards
May explode from heat or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect. Containers may explode when heated. Runoff may create fire or explosion hazard.
EC Risk Phrase
R 7 20/21/22 34 44 51/53
EC Safety Phrase
S 23 24/25
EC Safety Phrase
S 3/7 26 36/37/39 45 61
UN (DOT)
2092, 2093, 2094

Exposure Controls/Personal Protection

Personal Protection
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.
Personal Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
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.
Exposure Effects
Abnormally low blood pressure and apnea have been reported with severe poisonings. Cerebral edema, cerebral gas embolism, cerebral infarction, and seizures have been reported following ingestion of concentrated (35%) solutions. Death has been reported as a result of embolic cerebrovascular injury.
Exposure limit(s)
OEL-RUSSIA:STEL 5 mg/m3;Skin
Poison Class
2

Fire Fighting Measures

Flash Point
27
Flash Point
75
Autoignition
204
Fire Fighting
SMALL FIRES: Water spray or fog is preferred; if water not available use dry chemical, carbon dioxide or regular foam. LARGE FIRES: Flood fire area with water from a distance. Use water spray or fog; do not use straight streams. Move containers from fire area if you can do it without risk. Do not move cargo or vehicle if cargo has been exposed to heat. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire Fighting
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. Combustible Liquid. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Upper exp. limit
10
Lower exp. limit
5
Fire Potential
A reactive, oxidizing, flammable liquid. Dangerous when exposed to heat or flame. It is heat sensitive. Spontaneous chem reaction and ignition. May occur if mixed with readily oxidizable, organic or flammable materials.

Accidental Release Measures

Small spills/leaks
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Keep substance wet using water spray. Stop leak if you can do it without risk. SMALL SPILLS: Take up with inert, damp, noncombustible material using clean non-sparking tools and place into loosely covered plastic containers for later disposal.
Small spills/leaks
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Remove all sources of ignition.

Stability and Reactivity

Stability
Stable to 75 C; slow 1st-order decomp can be accelerated by presence of 1 mole-% of copper, cobalt and manganese salts.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, acid chlorides, acid anhydrides.
Incompatibilities
The substance is a strong oxidant and reacts violently with combustible and reducing materials, metallic and sulfur compounds.
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2092, 2093, 2094
Hazard Class
5.2
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