Hydroquinone decreases the formation of melanin in the skin. Melanin is the pigment in skin that gives it a brown color.

Hydroquinone topical (for the skin) is used to lighten areas of darkened skin such as freckles, age spots, melasma(sun damage), or chloasma (darkened skin caused by hormonal changes).

Hydroquinone topical may also be used for purposes not listed in this medication guide.

Certificate of Analysis

  • Description

    White to almost white, crystalline powder.

    Result

    Complies

  • Identification by IR

    Positive

    Result

    Positive

  • Identification by Na

    Negative

    Result

    Negative

  • Solubility

    Practically insoluble in Water, Freely soluble in Ethanol

    Result

    Complies

  • Optical Rotation

    -7° to -12° c

    Result

    -9.4° C

  • Water

    1.4 to 2.0 %

    Result

    1.8%

  • Sulphated Ash

    NMT 0.2%

    Result

    0.01%

  • Residue Solvents

    99.0% to 100.5%

    Result

    99.63%

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MATERIAL SAFETY DATA SHEET

  • Section 1 – Chemical Product

    Product Identifier

    Hydroquinone

    MSDS Prepared By

    R&D Department

  • Section 2 – Composition / Information Of Ingredients

    Product Name

    Hydroquinone

    Synonymous Name

    1,4-benzenedio

    CAS Number

    123-31-9

  • Section 3 – HAZARDOUS IDENTIFICATION

    Health Hazard

    Acute toxicity (Oral)

    Category 4

    Serious eye damage

    Category 1

    Skin Sensitizer

    Category 1

    Germ Cell Mutagenicity

    Category 2

    Specific Target Organ Toxicity – Single Exposure (Dermal)

    Category 2

    OSHO Specified Hazards

    Combustible Dust

    If converted to small particles during further processing, handling or by other means may form combustible dust concentrations in air.

    Signal Words

    Danger!

    Hazards Statements

    H302

    Harmful if swallowed.

    H318

    Causes serious eye damage.

    H317

    May cause an allergic skin reaction.

    H341

    Suspected of causing genetic defects.

    H371

    May cause damage to organs. If converted to small particles during further processing, handling or by other means may form combustible dust concentrations in air.

    Precautionary Statements

    Preventions

    P201

    Obtain special instructions before use.

    P202

    Do not handle until all safety precautions have been read and understood.

    P281

    Use personal protective equipment as required

    P264

    Wash hands thoroughly after handling.

    P270

    Do not eat, drink or smoke when using this product.

    P260

    Do not breathe dust / fume / gas / mist / vapors / spray.

    P280

    Wear protective gloves / Protective clothing / Eye protection / Face protection

    P272

    Contaminated work clothing should not be allowed out of the workplace.

    Response

    P309+P311

    IF exposed or if you feel unwell: Call a POISON CENTER or doctor / physician.

    P301+P312

    IF SWALLOWED: Call a POISON CENTER or doctor / physician if you feel unwell.

    P330

    Rinse mouth

    P302+P352

    IF ON SKIN: Wash with plenty of soap and water.

    P333+P313

    If skin irritation or rash occurs: Get medical advice / attention.

    P363

    Wash contaminated clothing before reuse.

    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

    Storage

    P405

    Store locked up.

    Disposal

    P501

    Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

  • Section 4 – FIRST AID

    Skin Contact

    Immediately remove contaminated clothing and shoes and wash skin with soap and plenty of water. If skin irritation or an allergic skin reaction develops, get medical attention. Wash contaminated clothing before reuse. Destroy or thoroughly clean contaminated shoes.

    Eye Contact

    Immediately flush with plenty of water for at least 15 minutes. If easy to do, remove contact lenses. Get medical attention. In case of irritation from airborne exposure, move to fresh air. Get medical attention if symptoms persist.

    Inhalation

    Move to fresh air. Treat symptomatically. Get medical attention if symptoms persist.

    Ingestion

    Call a physician or poison control centre immediately. Only induce vomiting at the instruction of medical personnel. Never give anything by mouth to an unconscious person.

    Important Information

    Call a physician or poison control centre immediately. Only induce vomiting at the instruction of medical personnel. Never give anything by mouth to an unconscious person.

    Hazards

    N/A

    Treatment

    Treat symptomatically

  • Section 5 – FIRE FIGHTING MEASURES

    General Fire Hazards

    Material can accumulate static charges which may cause an electrical spark (ignition source). Use proper bonding and/or grounding procedures.

    Extinguishing Media

    Suitable Extinguishing Media

    N/A

    Unsuitable Extinguishing Media

    Water spray. Dry chemical. Carbon Dioxide. Water spray. Carbon Dioxide. Dry chemical.

    Special hazards arising from the substance or mixture

    Powdered material may form explosive dust-air mixtures

    Advice for Fire-Fighters

    Special Fire-Fighting Procedures

    Minimize dust generation and accumulation.

    Special protective equipment for fire-fighters

    Self-contained breathing apparatus and full protective clothing must be worn in case of fire.

  • Section 6 – ACCIDENT RELEASE MEASURES

    Personal Precautions

    Wear appropriate personal protective equipment.

    Environmental Precautions

    Do not release into the environment.

    Methods and material for containment and cleaning up

    Sweep up and place in a clearly labeled container for chemical waste. Large Spillages: Flush spill area with water spray. Prevent runoff from entering drains, sewers, or streams. Dike for later disposal.

    Notification Procedures

    In the event of a spill or accidental release, notify relevant authorities in accordance with all applicable regulations.

  • Section 7 – HANDLING AND STORAGE

    Handling

    Avoid breathing dust. Avoid contact with eyes, skin, and clothing. Do not taste or swallow. Use only with adequate ventilation. Wash thoroughly after handling.

    Storage

    Keep container closed. Keep away from food, drink and animal feeding stuffs.

    Specific end user(s)

    Inhibitor Chemical Intermediate Photographic processing chemical.

  • Section 8 – EXPOSURE CONTROLS / PERSONAL PROTECTION

    Appropriate Engineering Controls

    Good general ventilation (typically 10 air changes per hour) should be used. Ventilation rates should be matched to conditions. If applicable, use process enclosures, local exhaust ventilation, or other engineering controls to maintain airborne levels below recommended exposure limits. If exposure limits have not been established, maintain airborne levels to an acceptable level.

    Personal Protective Equipment

    General information

    Eye bath. Washing facilities. Safety shower.

    Eye / Face Protection

    Chemical goggles and face shield are recommended. Wear a full-face respirator, if needed.

    Skin / Hand Protection

    Wear chemical-resistant gloves, footwear, and protective clothing appropriate for the risk of exposure. Contact health and safety professional or manufacturer for specific information. Wash hands after contact.

    Respiratory Protection

    If engineering controls do not maintain airborne concentrations below recommended exposure limits (where applicable) or to an acceptable level (in countries where exposure limits have not been established), an approved respirator must be worn. In the United States of America, if respirators are used, a program should be instituted to assure compliance with OSHA Standard 63 FR 1152, January 8, 1998. Respirator type: Air- purifying respirator with an appropriate, government approved (where applicable), air-purifying filter, cartridge or canister. Contact health and safety professional or manufacturer for specific information.

    Hygiene Measures

    Observe good industrial hygiene practices.

    Environmental Controls

    N/A

  • Section 9 – PHYSICAL AND CHEMICAL PROPERITIES

    Physical State

    Solid

    Form

    Solid (Crystal)

    Odor

    Odorless

    Odor Threshold

    N/A

    Melting Point

    172.3 °C

    Boiling Point

    287 °C

    Flash Point

    165 °C (closed cup)

    Evaporation Rate

    N/A

    Flammability (Solid, Gas)

    N/A

    Flammability Limit – Upper (%)

    N/A

    Flammability Limit – Lower (%)

    N/A

    Vapor Pressure

    0.000032 hPa (25 °C)

    Vapor density (air=1)

    3.8

    Specific Gravity

    1.33 (15 °C)

    Solubility in Water

    72 g/l (25 °C)

    Solubility (other)

    N/A

    Partition coefficient (n-octanol/water)

    log Pow: 0.59

    Autoignition Temperature

    515 °C

    Decomposition Temperature

    Thermal stability not tested. Low stability hazard expected at normal operating temperatures.

    Dynamic Viscosity

    N/A

    Kinematic Viscosity

    N/A

    Explosive Properties

    N/A

    Oxidizing Properties

    N/A

  • Section 10 – STABILITY AND REACTIVITY

    Reactivity

    No

    Chemical Stability

    Stable

    Possibility of Hazardous Reactions

    N/A

    Conditions to Avoid

    Heat, sparks, flames, Light.

    Incompatible Materials

    Strong oxidizing agents. Strong alkalis.

    Hazardous Decomposition Products

    Carbon Dioxide. Carbon Monoxide.

  • Section 11 – TOXICOLOGICAL INFORMATION

    Information on likely routes of exposure

    Inhalation

    No

    Ingestion

    Harmful if swallowed.

    Skin Contact

    May cause an allergic skin reaction. May cause skin depigmentation.

    Eye Contact

    Causes serious eye damage.

    Incompatible Materials

    Strong oxidizing agents. Strong alkalis.

    Specified Substance(s)

    Hydroquinone

    Oral LD-50: (Rat): > 375 mg/kg

    Dermal

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    Dermal LD-50: (Rabbit): > 2,000 mg/kg

    Inhalation

    Product

    N/A

    Repeated Dose Toxicity

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    NOAEL (Rat, Oral Study. 90 d) : 20 ng/kg – NOAEL (Rat, Dermal Study. 90 d) : 73.9 ng/kg (highest dose tested)

    Skin Corrosion/Irritation

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    N/A

    Serious Eye Damage / Eye Irritation

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    (Human): corneal opacity

    Respiratory or Skin Sensitization

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    Skin Sensitization: (Mouse) : Sensitizing / Skin Sensitization: (Guinea Pig) : Not a skin Sensitizer.

    Carcinogenicity

    Product

    N/A

    Toxicity to Reproduction

    Product

    N/A

    Developmental Toxicity

    Product

    N/A

    Germ Cell Mutagenicity

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    Mutagenicity – Bacterial: negative / Chromosomal aberration: negative / Chromosomal aberration: positive / Chromosomal aberration: negative / Mutagenicity – Mammalian: positive

    In Vivo

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    Chromosomal aberration intraperitoneal injection (Mouse): Positive / Chromosomal aberration oral Gavage (Rat): Negative

    Specific Target Organ Toxicity

    Product

    N/A

    Single Exposure Specific Target

    Product

    N/A

    Organ Toxicity – Repeated Exposure

    Product

    N/A

    Aspiration Hazard

    Product

    N/A

  • Section 12 – ECOLOGICAL INFORMATION

    Ecotoxicity

    Acute hazards to the aquatic Environment

    Fish

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    LC-50 (Fish, 96 h): 0.638 mg/l

    Aquatic Invertebrates

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    EC-50 (daphnid, 48 h): 0.134 mg/l

    Chronic hazards to the aquatic Environment

    Fish

    Aquatic Invertebrates

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    NOEC: (daphnid, 21 d): 0.0057 mg/l

    Toxicity to Aquatic Plants

    Product

    N/A

    Aquatic Invertebrates

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    EC-50 (Alga, 72 n) 0.33 mg/l – NOEC (Alga, 72 n) 0.019 mg/l

    Persistence and Degradability Biodegradation

    Product

    N/A

    Specified Substance(s)

    Hydroquinone

    70 % (14 d, Ready Biodegradability: Modified MITI Test (I)) Readily biodegradable

    BOD/COD Ratio

    Product

    N/A

    Bioaccumulative Potential Bioconcentration Factor (BCF)

    Product

    N/A

    Partition Coefficient n-octanol / Water (log Kow)

    Product

    Log Kow: 0.59 20 °C

    Mobility in Soil

    N/A

    Known or Oredicted Distribution to Environmental Compartments

    Hydroquinone

    Log Koc: 0.97 – 1.7 (QSAR model)

    Other Adverse Effect

    N/A

  • Section 13 – DISPOSAL CONSIDERATION

    General Information

    N/A

    Disposal Methods

    Dispose of waste and residues in accordance with local authority requirements. Incinerate. Since emptied containers retain product residue, follow label warnings even after container is emptied.

  • Section 14 – TRANSPORT INFORMATION

    Important Note

    Shipping descriptions may vary based on mode of transport, quantities, package size, and/or origin and destination. Consult your company’s Hazardous Materials/Dangerous Goods expert for information specific to your situation.

    DOT

    Class 9, Packing Group III when material is shipped in quantities in one package at or above the Reportable Quantity and when no other hazard class applies; otherwise, not regulated.

    Possible Shipping Description

    UN 3077 Environmentally hazardous substances, solid, n.o.s. (hydroquinone)

    IMDG

    Marine pollutant.: (hydroquinone)

    Possible Shipping Description

    UN 3077 ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (hydroquinone)

    IATA Possible Shipping Description

    UN 3077 Environmentally hazardous substance, solid, n.o.s. (hydroquinone)

  • Section 15 – REGULATORY INFORMATION

    OSHA

    Hazardous

    TSCA (US Toxic Substances Control Act)

    This product is listed on the TSCA inventory. Any impurities present in this product are exempt from listing.

    DSL (Canadian Domestic Substances List) and CEPA (Canadian Environmental Protection Act)

    This product is listed on the DSL or otherwise complies with CEPA new substance notification requirements.

    AICS / NICNAS (Australian Inventory of Chemical Substances and National Industrial Chemicals Notification and Assessment Scheme)

    This product is listed on AICS or otherwise complies with NICNAS.

    MITI (Japanese Handbook of Existing and New Chemical Substances)

    This product is listed in the Handbook or has been approved in Japan by new substance notification.

    ECL (Korean Toxic Substances Control Act)

    This product is listed on the Korean inventory or otherwise complies with the Korean Toxic Substances Control Act.

    HMIS Hazard Ratings

    Health

    2*

    Flammability

    1

    Chemical Reactivity

    0

  • Section 16 – OTHER INFORMATION

    Global Pharma provides information contained herein in good faith but makes no representation as to its comprehensives or accuracy. This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product.

    Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.

    GLOBAL PHARMA MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OR MERCHANTABILITY, FITNESS FOR A PARTICULER PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT WHICH THE INFORMATION REEFERS. GLOBAL PHARMA WILL NOT BE RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF RELIANCE UPON THIS INFORMATION.

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