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