Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol BP Ph Eur USP Grade Manufacturers, with SDS GHS MSDS Sheet

Supplier, Manufacturer, Exporter of Hydroquinone or 1,4-Benzenediol, Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance Food & Flavor chemicals, Reagent Grade Chemicals, Shale Gas Fracturing Chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, China, Germany, France, Italy, Portugal etc.

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Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol: CAS Number: 123-31-9, EINECS EC Number: 204-617-8, Molecular Formula: C6H4(OH)2 or C6H6O2, Molecular Weight: 110.11, HS Code 2907 22 00

Specifications, Safety Data Sheet, Manufacturing process details, Wholesale retail buy sell prices, Uses etc available on line in these pages for Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol.

Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol is an aromatic organic compound having the chemical formula C6H4(OH)2. Hydroquinone is a depigmenting agent used to lighten areas of darkened skin. It is also used as an inhibitor, an antioxidant, and an intermediate in the synthesis of dyes, motor fuels and oils, in photographic processing.

General Properties and Specifications of Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol:
Appearance: White needle crystal.
Odor: Odorless.
Assay: 99.7%
Solubility in CH3COOH: Clear
Residue on ignition: 0.01
Heavy metal as Pb: 0.001% maximum.
Iron: 0.001% maximum.
Resorcinol: Nil
Relative density: about 1.33
Melting point: 172C to 174C literature.
Boiling point: 285C to 287 literature.
Flash point: 165C.
Auto-ignition temperature: 515C.
Solubility: Soluble in water. Very soluble in carbon tetrachloride.

Hydroquinone USP Grade:
C6H6O2 --- 110.11
1,4-Benzenediol.
Hydroquinone CAS 123-31-9.

Hydroquinone contains not less than 99.0 percent and not more than 100.5 percent of C6H6O2 calculated on the anhydrous basis.
Packaging and storage: Preserve in tight, light-resistant containers.

Identification:
A: Infrared Absorption.
B: To pass the chromatography test.
C: A 1 in 40,000 solution in methanol exhibits an absorbance maximum at 293 ± 2 nm.
Melting range: between 172C and 174C.
Water Determination: not more than 0.5%.
Residue on ignition: not more than 0.5%.
Assay: Dissolve about 250 mg of Hydroquinone, accurately weighed, in a mixture of 100 mL of water and 10 mL of 0.1 N sulfuric acid, add 3 drops of diphenylamine, and titrate with 0.1 N ceric sulfate until a red-violet endpoint is reached. Perform a blank determination and make any necessary correction. Each mL of 0.1 N ceric sulfate is equivalent to 5.506 mg of C6H6O2.

Hydroquinone BP Ph Eur Grade:
C6H6O2 --- 110.11 --- CAS 123-31-9
Action and use: Depigmenting agent.

DEFINITION
Hydroquinone is 1,4-benzenediol. It contains not less than 99.0% and not more than 100.5% of C6H6O2, calculated with reference to the anhydrous substance.

CHARACTERISTICS
Fine white or almost white needles, which darken on exposure to light and air.
Freely soluble in water, in ethanol (96%) and in ether.

IDENTIFICATION
A. The light absorption in the range 230 to 350 nm, of a 0.0025% w/v solution in methanol exhibits a maximum at 293 nm.
B. To pass the test.

TESTS
Melting point: 172C to 174C.
Water: Not more than 0.5%,
Sulfated ash: Not more than 0.5% w/w.

ASSAY
Dissolve 0.25 g in a mixture of 100 mL of water and 10 mL of 0.1M sulfuric acid, add 3 drops of diphenylamine and titrate with 0.1M cerium(IV) sulfate until a red-violet colour is reached. Each mL of 0.1M cerium(IV) sulfate is equivalent to 5.506 mg of C6H6O2.

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Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol
SDS, Safety Data Sheet
MSDS Sheet, Material Safety Data Sheet 02-Dec-20

Product Name & Other Names: Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol.
CAS No.: 123-31-9
EINECS EC Number: 204-617-8
Molecular Weight: 110.11
Chemical Formula: C6H4(OH)2 or C6H6O2
Relevant uses and uses advised against (if any): Industrial Manufacturing.
Suppliers: As per letterhead.

GHS, Globally Harmonized System Classification in accordance with 29 CFR 1910
Classification according to Regulation (EC) No 1272/2008

Acute toxicity, Oral Category 4, H302
Skin sensitization Category 1, H317
Serious eye damage Category 1, H318
Germ cell mutagenicity (Category 2), H341
Carcinogenicity Category 2, H351
Hazardous to the aquatic environment, long-term hazard Category 1, H410

Hazard statements:
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 statements:
P201: Obtain special instructions before use.
P202: Do not handle until all safety precautions have been read and understood.
P264 Wash thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P281: Use personal protective equipment as required.
P312: Call a POISON CENTER or doctor/physician if you feel unwell.
P330 : Rinse mouth
P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/ physician if you feel unwell.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308+313: IF exposed or concerned: Get medical advice/attention.
P391: Collect spillage.
P405: Store locked up.
P501: Dispose of contents/container in accordance with local/regional/national/international regulation.

Classification according to EU Directives 67/548/EEC or 1999/45/EC:
Hazard Symbols:
C Corrosive.
Xn Harmful.
Xi Irritant.
N Dangerous for the environment Harmful.
Risk Phrases:
R21/22 Harmful in contact with skin and if swallowed.
R36/38 Irritating to eyes and skin.
R40 Limited evidence of a carcinogenic effect.
R41 Risk of serious damage to eyes.
R43 May cause sensitization by skin contact.
R50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R62 Possible risk of impaired fertility.

Product Name & Other Names: Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol.
CAS No.: 123-31-9
EINECS EC Number: 204-617-8

Inhalation: Allow the victim to rest in a well-ventilated area. Seek immediate medical attention.
Ingestion: Give large amounts of water to drink. Never give anything by mouth to an unconscious person. Get medical attention.
Skin Contact: Immediately flush skin with plenty of soap and water for at least 15 minutes. Remove contaminated clothing and shoes and wash before reuse. Get medical attention if irritation develops.
Eye Contact: Immediately flush eyes with running water for at least 15 minutes, keeping eyelids open. Cold water may be used. Get medical attention immediately.

Fire: As with most organic solids, fire is possible at elevated temperatures or by contact with an ignition source.
Explosion: Fine dust dispersed in air in sufficient concentrations, and in the presence of an ignition source is a potential dust explosion hazard.
Fire Extinguishing Media: Water spray, dry chemical, alcohol foam, or carbon dioxide.
Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full face piece operated in the pressure demand or other positive pressure mode. At high temperatures under fire conditions, it may produce toxic or irritating fumes. Fire-extinguishing work is done from the windward and the suitable fire-extinguishing method according to the surrounding situation is used. Uninvolved persons should evacuate to a safe place.

Personal precautions, protective equipment, and emergency procedures: Avoid breathing dust/fumes/gas/mist/vapors/spray. Ensure adequate ventilation. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Restrict unprotected personnel from the area. Prevent any contact with hot surfaces. Do not approach facing the wind. Do not touch the spilled material.
Environmental precautions: Do not let the product enter drains, soil, or water sources.
Methods and materials used for containment Cleanup procedures and Storage:
Small Spill: Dilute with water and mop up or absorb with an inert dry material and place in an appropriate waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to legal authority requirements.
Large Spill: Contain spilled material. Cover with an inert material and put the spilled material in an appropriate waste disposal. Finish cleaning by spreading water on the contaminated surface and dispose of according to legal authority requirements.

Precautions for safe handling: Apply according to good manufacturing and industrial hygiene practices. Ensure proper ventilation. Wash thoroughly after handling. Do not drink, eat, or smoke while handling. Avoid contact with skin, eyes, and clothing. Minimize dust generation. Avoid breathing dust/fumes/gas/mist/vapors/spray. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Prevent any contact with hot surfaces.
Conditions for safe storage, including any incompatibilities: Store in cool, dry, and ventilated area away from heat sources and protected from sunlight in tightly closed original container. Keep air contact to a minimum. Do not leave the material container open. Store protected from heat, sparks and ignition sources and incompatible materials. Avoid contact with skin and eyes. Avoid inhalation of dust/mist/vapor. Do not store with incompatible materials like strong oxidizers, strong bases. Store away from sources of heat, moisture.

Airborne Exposure Limits:
USA ACGIH TLV(TWA): 1 mg/m3; OSHA PEL(TWA): 2 mg/m3
Ventilation System: A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved): For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil particles (e.g., lubricants, cutting fluids, glycerin, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection: Wear protective gloves and clean body-covering clothing.
Eye Protection: Use chemical safety goggles and/or full-face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.
Other Control Measures: Maintain good housekeeping in work area. Dust deposits on floors and other surfaces may pick up moisture and cause the surfaces to become slippery and present safety hazards. Handle in accordance with good industrial hygiene and safety practice. Wash hands after handling.

Appearance: White needle crystal.
Odor: Odorless.
Odor threshold: Not available.
pH: Not available.
Relative density: about 1.33
Melting point/freezing point: 172C to 174C literature.
Initial boiling point and boiling range: 285C to 287 literature.
Flash point: 165C.
Auto-ignition temperature: 515C.
Decomposition temperature: Not available.
Upper/lower flammability or explosive limits: Not available.
Vapor pressure: Not available.
Vapor density: Not available.
Evaporation rate: Not available.
Flammability (solid, gas): Not available.
Partition coefficient: n-octanol/water: Not available.
Solubility: Soluble in water. Very soluble in carbon tetrachloride.
Viscosity: Not available.
Molecular Weight: 110.11
Chemical Formula: C6H4(OH)2 or C6H6O2

Stability: Stable under ordinary conditions of use and storage. Dust explosion possible if in powder or granular form, mixed with air.
Hazardous Decomposition Products: When heated to decomposition it emits toxic fumes.
Hazardous Polymerization: Will not occur.
Incompatibilities: Strong oxidizers, strong bases.
Conditions to Avoid: Incompatibles, heat, light, moisture.

Acute toxicity:
LD50 Oral - Rat - 367 mg/kg.
LD50 Dermal - Rabbit - >2000 mg/kg.
Investigated as a tumorigenic, mutagen, reproductive effector.
Carcinogenic Effects: A3 - Animal Carcinogen by IARC.
Mutagenic Effects: Mutagenic category 2
Reproductive Effects: Reproductive toxicity effects on laboratory animals.

Very toxic to aquatic life with long lasting effects.
Toxicity to fish: flow-through test LC50 - Oncorhynchus mykiss (rainbow trout) - 0,64 mg/l - 96 h.
Toxicity to daphnia and other aquatic invertebrates: semi-static test EC50 - Daphnia magna (Water flea) - 0,061 mg/l - 48 h.
Persistence and Degradability: Unlikely to persist due to water solubility.
Mobility: Likely to be mobile due to water solubility.
Bioaccumulation/ Accumulation: No information available.
Results of PBT and vPvB assessment: No data available for assessment.

Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused material in accordance with legal requirements.

DOT USA, TDG Canada & ADR/RID Europe:
UN/ID no UN3077
Hazard Class 9
Packing Group III
Proper shipping name Environmentally hazardous substance, solid, n.o.s. HYDROQUINONE.
IMDG/IMO:
UN/ID no UN3077
Hazard Class 9
Packing Group III
Proper shipping name Environmentally hazardous substance, solid, n.o.s. HYDROQUINONE.
IATA/ICAO:
UN/ID no UN3077
Hazard Class 9
Packing Group III
Proper shipping name Environmentally hazardous substance, solid, n.o.s. HYDROQUINONE.

USA:
SARA 311/312 Hazard Categories: Acute health hazard, Chronic Health Hazard. See section 2.

European Labeling in Accordance with EC Directives:
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.

Disclaimer:
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Our company provides this MSDS sheet in good faith but makes no representation as to its comprehensiveness or accuracy. This SDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. The above information has been compiled from various sources and has the possibility of discrepancy and being out-dated information. Individuals receiving the information must exercise their independent judgment and do further search in determining its appropriateness for a particular purpose. In no case shall our company be liable to loss or damages by the product user.
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