| Safety data sheet |
| According to EC Directive 91/155/EEC |
|
|
| 1. Identification of the substance/preparation and of the company/undertaking |
| Identification of the product | ||
| Catalogue No.: | 159636 | |
| Product name: | Hydroquinone Reag. Ph Eur | |
| Manufacturer/supplier identification | ||
| Company: |
Merck Ltd. 9th Floor, Monterey Tower, 2170 New Petchburi Road, Bangkapi, Huaykwang, Bangkok 10320 Tel: (662) 308 - 0218 |
|
| 2. Composition/information on ingredients |
| Synonyms |
| 1,4-Dihydroxybenzene ; p-Dihydroxybenzene ; Quinol |
| CAS-No.: | 123-31-9 | EC-Index-No.: | 604-005-00-4 | ||
| Molar mass: | 110.11 | EINECS-No.: | 204-617-8 | ||
| Molecular formula: | C6H6O2 | ||||
| 3. Hazards identification |
| Harmful by inhalation and if swallowed. |
| 4. First aid measures |
|
After inhalation: fresh air. After skin contact: wash off with plenty of water. Remove contaminated clothing. After eye contact: rinse out with plenty of water with the eyelid held wide open. Summon eye specialist. After swallowing: make victim drink plenty of water, induce vomiting, summon doctor. |
| 5. Fire-fighting measures |
| Suitable extinguishing media: |
| Water, CO2, foam, powder. |
|
Special risks: |
| Combustible. Danger of dust explosion. Development of hazardous combustion gases or vapours possible in the event of fire. |
|
Special protective equipment for fire fighting: |
| Do not stay in dangerous zone without suitable chemical protection clothing and self-contained breathing apparatus. |
| 6. Accidental release measures |
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Person-related precautionary measures: Avoid generation of dusts; do not inhale dusts. Avoid substance contact. Procedures for cleaning / absorption: Take up dry. Forward for disposal. Clean up affected area. Environmental-protection measures: Do not allow to enter sewerage system. |
| 7. Handling and storage |
| Handling: |
| No further requirements. |
| Storage: |
| Tightly closed. Dry. Protected from light. At +15°C to +25°C. |
| 8. Exposure controls/personal protection |
| Personal protective equipment: | |
| Respiratory protection: | required when dusts are generated. |
| Eye protection: | required |
| Hand protection: | required |
| Industrial hygiene: | Change contaminated clothing. Application of skin- protective barrier cream recommended. Wash hands after working with substance. |
| 9. Physical and chemical properties |
| Form: | solid | |||
| Colour: | colourless to white | |||
| Odour: | almost odourless | |||
| pH value | ||||
| at 50 g/l water | (20 °C) | 3 - 4 | ||
| Melting temperature | 170 °C | |||
| Boiling temperature | 286 °C | |||
| Ignition temperature | 516 °C | |||
| Flash point | 165 °C | |||
| Explosion limits | lower | not available | ||
| upper | not available | |||
| Vapour pressure | (132 °C) | 1.3 hPa | ||
| Density | (20 °C) | 1.35 g/cm3 | ||
| Solubility in | water | (25 °C) | ~ 70 g/l | |
| ethanol | (20 °C) | freely soluble | ||
| ether | (20 °C) | freely soluble | ||
| Thermal decomposition | > 170 °C | |||
| log P(oct): | 0.59 |
| 10. Stability and reactivity |
| Conditions to be avoided |
| Heating. |
| Substances to be avoided |
| strong oxidizing agents , alkalis |
| Hazardous decomposition products |
| no information available |
| Further information |
|
light-sensitive ; sublimable ; strong reducing agent ; dust explosion possible ; Explosible with air in a vaporous/gaseous state when heated. |
| 11. Toxicological information |
| Acute toxicity |
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LD50 (oral, rat): 320 mg/kg ; LDLo (oral, human): 29 mg/kg ; |
| Subacute to chronic toxicity |
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Animal experiments performed under conditions comparable with the workplace situation have shown the substance to be carcinogenic. Possible mutagenic effect in humans. The suspicion is based on proven damage to the genetic material in the germ cell of man and animal and requires further clarification. |
| Further toxicological information |
|
After inhalation: strong irritant effect coughing , dyspnoea Possible damages: pulmonary oedema ( Latency time until onset of action. ) After skin contact: Severe irritations. After eye contact: Severe irritations. Risk of corneal clouding. After swallowing: nausea , vomiting , diarrhoea , dyspnoea , cyanosis , collapse |
| Further data |
|
Further hazardous properties cannot be excluded. The product should be handled with the care usual when dealing with chemicals. |
| 12. Ecological information |
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Biologic degradation: Readily biodegradable (reduction: DOC >70 %; BOD >60 %; BOD5 to COD >50 %). Behavior in environmental compartments: Distribution: log P(oct):: 0.59 ; No bioaccumulation is to be expected (log P(o/w <1). Evaluation number (FRG) (bacteria): 4.2 ; Evaluation number (FRG) (fish): 6.8 ; Evaluation number (FRG) (mammal): 3 ; Ecotoxic effects: Biological effects: Highly toxic for aquatic organisms. High aquatic toxicity. Formation of health-hazardous mixtures possible with water. Hazard for drinking water supplies. Fish toxicity: L.idus LC50: 0.15 mg/l ; Br.rerio LC50: 0.17 mg/l ; Daphnia toxicity: Daphnia magna LC50: 0.1 mg/l ; Algeal toxicity: Sc.quadricauda EC0: 0.93 mg/l ; M.aeruginosa EC0: 1.1 mg/l ; Bacterial toxicity: Ps.pudita EC0: 58 mg/l ; E.coli EC0: 50 mg/l ; Protozoa : E.sulcatum EC0: 11 mg/l ; Further ecologic data: BOD5: 0.62 g/g ; ThOD: 1.89 g/g ; BOD 25 % of ThOD /5 d ; Do not allow to enter waters, waste water, or soil! |
| 13. Disposal considerations |
| Product: |
| There are no uniform EC Regulations for the disposal of chemicals or residues. Chemical residues generally count as special waste. The disposal of the latter is regulated in the EC member countries through corresponding laws and regulations. We recommend that you contact either the authorities in charge or approved waste disposal companies which will advise you on how to dispose of special waste. |
| Packaging: |
| Disposal in compliance with official regulations. Handle contaminated packaging in the same way as the substance itself. If not officially specified differently, non-contaminated packaging may be treated like household waste or recycled. |
| 14. Transport information |
| Transport over land ADR/RID and GGVS/GGVE (Germany) | ||||
| GGVS/GGVE class: | 6.1 | Number and letter: | 14c | |
| ADR/RID class: | 6.1 | Number and letter: | 14c | |
| Name of material: | 2662 HYDROCHINON | |||
| River transport ADN/ADNR | |||
| not examined | |||
| Sea transport IMDG | ||||||
| IMDG class: | 6.1 | UN-No.: | 2662 | Packaging group: | III | |
| Ems: | 6.1-04 | MFAG: | 710 | |||
| Correct technical name: | HYDROQUINONE, SOLID | |||||
| Air transport ICAO-TI and IATA-DGR | |||||
| ICAO/IATA class: | 6.1 | UN/ID-No.: | 2662 | Packaging group: | III |
| Correct technical name: | HYDROQUINONE | ||||
| The transport regulations are cited according to international regulations and in the form applicable in Germany (GGVS/GGVE). Possible national deviations in other countries are not considered. |
| 15. Regulatory information |
| Labelling according to EC Directives | ||
| Symbol: | Xn | Harmful immediately and show this container or label. |
| R-phrases: | R 20/22 | Harmful by inhalation and if swallowed. |
| S-phrases: | S 24/25-39 | Avoid contact with skin and eyes. Wear eye/face protection. |
| EC-No.: | 204-617-8 | EC label |
| German regulations | ||
| Water pollution class | 3 | (highly polluting substance) |
| 16. Other information |
| Reason for alteration |
|
General update. Change in water pollution class. Addition in the chapter ecology. Addition in the chapter toxicology. |
