Hydroquinone

Avocado Research Chemicals Ltd

Revision date : 2026-07-25

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GHS07 GHS08 GHS05 GHS09
Health risk rating 4
Safety risk rating 1
Environmental risk rating 5

Note: Ingredients listed on restricted chemical lists

General Information

Version

5

Revision date

2026-07-25

Product name

Hydroquinone

Product Synonyms

1,4-Dihydroxybenzene; 1,4-Benzenediol

CAS No.

123-31-9

supplier name

Avocado Research Chemicals Ltd

Emergency telephone

001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887

Icons in SDS

GHS05 GHS07 GHS08 GHS09 M004 M009 M010 M011 M017

Company Information

company name

Avocado Research Chemicals Ltd

e-mail address of the competent person responsible for the Safety Data Sheet

begel.sdsdesk@thermofisher.com

GHS Information

Signal word

Danger

Hazard Codes

Hazard statements (CLP)

H302, H317, H318, H341, H351, H410

Hazard statements

Code

Statements

H302

Harmful if swallowed

Section 2

SECTION 2: Hazards identification

Physical State

Appearance/Odor

Solid Off-white Odorless Emergency Overview May cause an allergic skin reaction. Causes serious eye damage. Suspected of causing genetic defects. Harmful to aquatic life. Very toxic to aquatic life with long lasting effects. Harmful if swallowed. Suspected of causing cancer. May form combustible dust concentrations in air. Classification of the substance or mixture Acute Oral Toxicity Category 4 Serious Eye Damage/Eye Irritation Category 1 Skin Sensitization Category 1 Germ Cell Mutagenicity Category 2 Carcinogenicity Category 2 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity Category 1 Label Elements

Signal word

Danger Hazard Statements H317 - May cause an allergic skin reaction H318 - Causes serious eye damage H341 - Suspected of causing genetic defects H410 - Very toxic to aquatic life with long lasting effects H302 - Harmful if swallowed H351 - Suspected of causing cancer

Prevention

P201 - Obtain special instructions before use P202 - Do not handle until all safety precautions have been read and understood P261 - Avoid breathing dust/fume/gas/mist/vapors/spray P264 - Wash face, hands and any exposed skin thoroughly after handling P270 - Do not eat, drink or smoke when using this product P272 - Contaminated work clothing should not be allowed out of the workplace P280 - Wear protective gloves/protective clothing/eye protection/face protection

Response

P302 + P352 - IF ON SKIN: Wash with plenty of soap and water P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P310 - Immediately call a POISON CENTER or doctor P330 - Rinse mouth P363 - Wash contaminated clothing before reuse

Storage

P403 + P233 - Store in a well-ventilated place. Keep container tightly closed

Disposal

P501 - Dispose of contents/ container to an approved waste disposal plant

Other physicochemical hazards

None identified. May form combustible dust concentrations in air.

Health hazards

May cause an allergic skin reaction. Causes serious eye damage. Suspected of causing genetic defects. Harmful if swallowed. Suspected of causing cancer.

Environmental hazards

Harmful to aquatic life. Very toxic to aquatic life with long lasting effects. . Will likely be mobile in the environment due to its water solubility. The product is water soluble, and may spread in water systems.

2.3 Other hazards

Toxic to terrestrial vertebrates. This product does not contain any known or suspected endocrine disruptors. May form explosible dust-air mixture if dispersed.

2.1 Classification of the substance or mixture

Acute Oral Toxicity Category 4 Serious Eye Damage/Eye Irritation Category 1 Skin Sensitization Category 1 Germ Cell Mutagenicity Category 2 Carcinogenicity Category 2 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity

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