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Hazardous Chemical Details

Cas Number 75-91-2
Chemical Name Hydroperoxide, 1,1-dimethylethyl
Chemical Synonym tert-butyl hydroperoxide
1,1-dimethylethyl hydroperoxide
2-hydroperoxy-2-methylpropane
Perbutyl H
TBHP
Hazard Category Skin corrosion – category 1B
Skin sensitisation – category 1
Germ cell mutagenicity – category 2
Specific target organ toxicity (single exposure) – category 3
Acute toxicity (inhalation) - category 2
Acute toxicity (ingestion) - category 4
Acute toxicity (dermal) - category 4
Specific target organ toxicity (repeated exposure) – category 2
Hazard Statement H314 (Causes severe skin burns and eye damage)
H317 (May cause an allergic skin reaction)
H341 (Suspected of causing genetic defects)
H335 (May cause respiratory irritation)
H330 (Fatal if inhaled)
H302 (Harmful if swallowed)
H312 (Harmful in contact with skin)
H373 (May cause damage to organs through prolonged or repeated exposure)
Pictogram Pictogram of Corrosion GHS05 (Corrosion)
Pictogram of Skull and Crossbones GHS06 (Skull and Crossbones)
Pictogram of Health Hazard GHS08 (Health Hazard)
Signal Word Danger
Cut-offs
Notes 8 (The tables in schedule 6 of the WHS regulations replace some tables in the GHS, this may affect the cut off concentrations for this chemical.)
Sources N (The classification information for this entry was provided by the National Industrial Chemical Notification and Assessment Scheme)

Hazardous Chemical History

Date Description
08/04/2022 Synonym modified from
[tert-butyl hydroperoxide;
1,1-dimethylethyl hydroperoxide ;
2-hydroperoxy-2-methylpropane ;
Perbutyl H ;
TBHP]
to
[tert-butyl hydroperoxide;
1,1-dimethylethyl hydroperoxide ;
2-hydroperoxy-2-methylpropane ;
Perbutyl H;
TBHP]
Hazard Category modified from
[HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

Hazard Statement modified from
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure;
H332 Harmful if inhaled]
to
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure]
18/08/2021 Synonym modified from
[tert-butyl hydroperoxide]
to
[tert-butyl hydroperoxide;
1,1-dimethylethyl hydroperoxide ;
2-hydroperoxy-2-methylpropane ;
Perbutyl H ;
TBHP]
Hazard Category modified from
[HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC112:Specific target organ toxicity (repeated exposure) – category 2]
18/08/2021 Hazard Category modified from
[HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC112:Specific target organ toxicity (repeated exposure) – category 2,
HC067:Acute toxicity (inhalation) - category 4]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC112:Specific target organ toxicity (repeated exposure) – category 2]
18/08/2021 Hazard Category modified from
[HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC067:Acute toxicity (inhalation) - category 4,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

Hazard Statement modified from
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure]
to
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure;
H332 Harmful if inhaled]
18/08/2021 Hazard Category modified from
[HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC109:Specific target organ toxicity (single exposure) – category 2]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3,
HC112:Specific target organ toxicity (repeated exposure) – category 2]

Hazard Statement modified from
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure;
H371 May cause damage to organs]
to
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure]
18/08/2021 Hazard Category modified from
[HC060:Acute toxicity – category 2,
HC062:Acute toxicity – category 4,
HC062:Acute toxicity – category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3]

to
[HC065:Acute toxicity (inhalation) - category 2,
HC072:Acute toxicity (ingestion) - category 4,
HC077:Acute toxicity (dermal) - category 4,
HC081:Skin corrosion – category 1B,
HC092:Skin sensitisation – category 1,
HC098:Germ cell mutagenicity – category 2,
HC109:Specific target organ toxicity (single exposure) – category 2,
HC110:Specific target organ toxicity (single exposure) – category 3]

Hazard Statement modified from
[H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation]
to
[H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation;
H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H373 May cause damage to organs through prolonged or repeated exposure;
H371 May cause damage to organs]
05/06/2018 Synonym modified from
[]
to
[tert-butyl hydroperoxide]
Hazard Statement modified from
[H330 Fatal if inhaled;
H302 Harmful if swallowed;
H312 Harmful in contact with skin;
H314 Causes severe skin burns and eye damage;
H317 May cause an allergic skin reaction;
H341 Suspected of causing genetic defects;
H335 May cause respiratory irritation]
to
[H330 ;
H302 ;
H312 ;
H314 ;
H317 ;
H341 ;
H335 ]
09/05/2018 Chemical Added



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