International Chemical Safety Cards

tert-BUTYL HYDROPEROXIDE (70% AQUEOUS SOLUTION) ICSC: 0842

tert-BUTYL HYDROPEROXIDE (70% AQUEOUS SOLUTION)
1,1-Dimethylethylhydroperoxide
(CH3)3COOH/C4H10O2
Molecular mass: 90.14
CAS # 75-91-2
RTECS # EQ4900000
ICSC # 0842
UN # 3109
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Flammable. Many reactions may cause fire or explosion.
NO open flames. NO contact with flammable substances.
Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION Above 37°C explosive vapour/air mixtures may be formed. Risk of fire and explosion when heated.
Above 37°C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
 
EXPOSURE
PREVENT GENERATION OF MISTS!

INHALATION Burning sensation. Cough. Laboured breathing.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
SKIN Redness. Pain. Blisters.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
EYES Redness. Pain. Severe deep burns.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION Abdominal cramps. Burning sensation. Weakness.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents (extra personal protection: complete protective clothing including self-contained breathing apparatus).
Fireproof. Separated from combustible and reducing substances. Cool. Inspect frequently to identify bulging and leaking.
Do not repack.
UN Hazard Class: 5.2
UN Packing Group: II
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0842 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

tert-BUTYL HYDROPEROXIDE (70% AQUEOUS SOLUTION) ICSC: 0842

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
May explode on heating. The substance is a strong oxidant and reacts violently with combustible and reducing materials, metallic and sulphur compounds.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance, at high concentrations, is corrosive to the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
 Boiling point (decomposes): 89°C
Melting point: -3°C
Relative density (water = 1): 0.93
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 3.07 (calculated)		 Relative vapour density (air = 1): 3.1
Flash point: 43°C
Auto-ignition temperature: 238°C
Explosive limits, vol% in air: 5-10
Octanol/water partition coefficient as log Pow: -1.3 (calculated)
ENVIRONMENTAL
DATA
NOTES
TBHP-70 and Trigonox A-75 are trade names.
Transport Emergency Card: TEC (R)-839
NFPA Code: H 1; F 4; R 4; ox
ADDITIONAL INFORMATION


ICSC: 0842 tert-BUTYL HYDROPEROXIDE (70% AQUEOUS SOLUTION)
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.