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Hydroquinone - Popular developing agent used in many film and paper developers


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Hydroquinone - Popular developing agent used in many film and paper developers
Additional Information
Product Identifier


Brand : WildPhoto Ltd

CAS-No. : 123-31-9

Relevant identified uses of the substance or mixture and uses advised against

Identified uses : Photographic use only

Details of the supplier of the safety data sheet

Company :

WildPhoto Ltd
Unit 15-16 Highlode Industrial Estate
PE26 2RB

Telephone : +44 (0)1487 813447
E-mail address : info@wetplatesupplies.com

Emergency telephone number

Emergency Phone # : +44 (0)1487 813447

Hazard identification

Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008

Acute toxicity, Oral (Category 4), H302
Serious eye damage (Category 1), H318
Skin sensitisation (Category 1), H317
Germ cell mutagenicity (Category 2), H341
Carcinogenicity (Category 2), H351
Acute aquatic toxicity (Category 1), H400
Chronic aquatic toxicity (Category 1), H410

Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008

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

Precautionary statement(s)

P273                                        Avoid release to the environment.
P280                                        Wear protective gloves/ eye protection/ face protection.
P305 + P351 + P338                 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P501       Dispose of contents/ container to an approved waste disposal plant.



Synonyms: 1,4-Benzenediol, 1,4-Dihydroxybenzene

Formula: C6H6O2

First aid

Description of first aid measures General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Take off contaminated clothing and shoes immediately. Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Fire fighting

Extinguishing media 

Suitable extinguishing media

Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.

Special hazards arising from the substance or mixture

Carbon oxides

Advice for firefighters

Wear self contained breathing apparatus for fire fighting if necessary.

Further information

Gives off hydrogen by reaction with metals.The product itself does not burn.


Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed.

Conditions for safe storage, including any incompatibilities

Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

Accidental release

Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.

Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.

Methods and materials for containment and cleaning up

Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal



no data available

Chemical stability

no data available

Possibility of hazardous reactions

no data available

Conditions to avoid

Air, Light

Incompatible materials

Strong bases, Strong oxidizing agents

Hazardous decomposition products

Other decomposition products - no data available


Information on toxicological effects Acute toxicity

LD50 Oral - Rat - 367.3 mg/kg (OECD Test Guideline 401)
LD50 Dermal - Rabbit - > 2,000 mg/kg (OECD Test Guideline 402)

Skin corrosion/irritation

No data available

Serious eye damage/eye irritation

Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)

Respiratory or skin sensitization

in vivo assay - Mouse
Result: May cause sensitisation by skin contact. May cause allergic skin reaction. (OECD Test Guideline 429)

Germ cell mutagenicity

Laboratory experiments have shown mutagenic effects. In vitro tests showed mutagenic effects DNA repair
Rat - Liver cells Result: negative
Mutagenicity (micronucleus test) Mouse
Result: positive


This product is or contains a component that has been reported to be possibly carcinogenic based on its IARC, ACGIH, NTP, or EPA classification.
Limited evidence of carcinogenicity in animal studies

IARC:    3 - Group 3: Not classifiable as to its carcinogenicity to humans (Hydroquinone)

Reproductive toxicity

no data available

Specific target organ toxicity - single exposure

no data available

Specific target organ toxicity - repeated exposure

no data available

Potential health effects

Absorption into the body leads to the formation of methemoglobin which in sufficient concentration causes cyanosis.
Onset may be delayed 2 to 4 hours or longer.
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Liver - Irregularities - Based on Human Evidences



The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. WildPhoto Ltd shall not be held liable for any damage resulting from handling or from contact with the above product.

Product Tags

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Hydroquinone Wet Plate Supplies is a UK based store selling a range of supplies for alternative photographic processes, namely Wetplate collodion, Cyanotype, Gum bichromate, Kallitype, Van dyke and Pt/Pd. They also offer training and studio facilities for both wetplate and other alternative processes. In this section you can find our Hydroquinone