Chemical Safety Data Sheet MSDS / SDS


Revision Date:2023-01-14Revision Number:1

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Product identifier

  • Product name: 1-Bromo-3-chloro-5,5-dimethylhydantoin
  • CBnumber: CB3489387
  • CAS: 16079-88-2
  • EINECS Number: 240-230-0
  • Synonyms: 1-Bromo-3-Chloro-5,5-Dimethylhydantoin,1-Bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione

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

  • Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
  • Uses advised against: none

Company Identification

  • Company: Chemicalbook
  • Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
  • Telephone: 400-158-6606

SECTION 2: Hazards identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

Skin corrosion, Sub-category 1B

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Label elements

  • Signal word


Hazard statement(s)

H272 May intensify fire; oxidizer

H302 Harmful if swallowed

H314 Causes severe skin burns and eye damage

H400 Very toxic to aquatic life

Precautionary statement(s)

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

P273 Avoid release to the environment.


P301+P317 IF SWALLOWED: Get medical help.

P330 Rinse mouth.

P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P363 Wash contaminated clothing before reuse.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P316 Get emergency medical help immediately.

P321 Specific treatment (see ... on this label).

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P391 Collect spillage.


P405 Store locked up.


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.

Other hazards

no data available

SECTION 3: Composition/information on ingredients


  • Product name: 1-Bromo-3-chloro-5,5-dimethylhydantoin
  • Synonyms: 1-Bromo-3-Chloro-5,5-Dimethylhydantoin,1-Bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione
  • CAS: 16079-88-2
  • EC number: 240-230-0
  • MF: C5H6BrClN2O2
  • MW: 241.47

SECTION 4: First aid measures

Description of first aid measures

If inhaled

Move the victim into fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration and consult a doctor immediately. Do not use mouth to mouth resuscitation if the victim ingested or inhaled the chemical.

Following skin contact

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

Following eye contact

Rinse with pure water for at least 15 minutes. Consult a doctor.

Following ingestion

Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control Center immediately.

Most important symptoms and effects, both acute and delayed

no data available

Indication of any immediate medical attention and special treatment needed

FIRST AID: If in eyes, hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice. If on skin or clothing, Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center or doctor for treatment advice. If inhaled, move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration . Call a poison control center or doctor for further treatment advice. If swallowed, call poison control center, or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by the poison control center or doctor. Do not give anything by mouth to an unconscious person./98% 1-Bromo-3-chloro-5,5-dimethylhydantoin/

SECTION 5: Firefighting measures

Extinguishing media

Do not use ammonium phosphate extinguisher near water and /1-bromo-3-chloro-5,5-dimethylhandoin/.

Specific Hazards Arising from the Chemical

no data available

Advice for firefighters

Wear self-contained breathing apparatus for firefighting if necessary.

SECTION 6: Accidental release measures

Personal precautions, protective equipment and emergency procedures

Avoid dust formation. Avoid breathing mist, gas or vapours.Avoid contacting with skin and eye. Use personal protective equipment.Wear chemical impermeable gloves. Ensure adequate ventilation.Remove all sources of ignition. Evacuate personnel to safe areas.Keep people away from and upwind of spill/leak.

Environmental precautions

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

Methods and materials for containment and cleaning up

When handling or dealing with spills, use impact-resistant goggles with side shields, or face shield, body-covering clothes, including impervious rubber or plastic gloves and boots; use a dust respirator if dusting occurs. Sweep up dry spills and dispose of as described for pesticide disposal. If drum contents are contaminated or decomposing, do not reseal container; isolate unsealed drum in the open or in a well-ventilated area; flood with large volumes of water if necessary. 98% 1-Bromo-3-chloro-5,5-dimethylhydantoin

SECTION 7: Handling and storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store in a dark, cool (below 66 deg F (30"C)), dark well-ventilated area, In well closed original containers, away from energy sources, combustible organic materials, oxidizers, stong bases, and moisture.

SECTION 8: Exposure controls/personal protection

Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

Exposure controls

Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.

Individual protection measures

Eye/face protection

Wear tightly fitting safety goggles with side-shields conforming to EN 166(EU) or NIOSH (US).

Skin protection

Wear fire/flame resistant and impervious clothing. Handle with gloves. Gloves must be inspected prior to use. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

If the exposure limits are exceeded, irritation or other symptoms are experienced, use a full-face respirator.

Thermal hazards

no data available

SECTION 9: Physical and chemical properties

Information on basic physicochemical properties

  • Physical state


  • Colour

    Free-flowing, white powder

  • Odour

    Faint halogen odor

  • Melting point/freezing point

    159 - 163°C (Decomposes)

  • Boiling point or initial boiling point and boiling range

    232.7°C at 760mmHg

  • Flammability

    no data available

  • Lower and upper explosion limit/flammability limit

    no data available

  • Flash point


  • Auto-ignition temperature

    no data available

  • Decomposition temperature

    no data available

  • pH

    pH of 3.5 at 0.15% diluted solution

  • Kinematic viscosity

    no data available

  • Solubility

    In water, 0.15 g/100g water at 20 deg C

  • Partition coefficient n-octanol/water

    log Kow = 0.35

  • Vapour pressure


  • Density and/or relative density


  • Relative vapour density

    no data available

  • Particle characteristics

    no data available

SECTION 10: Stability and reactivity


no data available

Chemical stability

no data available

Possibility of hazardous reactions

no data available

Conditions to avoid

no data available

Incompatible materials

Strong oxidizer, mix with water only/ Reaction with combustible organic materials, bases, moisture or with oxidizers may generate heat, hazardous gases and, possibly fire or explosion. 98% 1-Bromo-3-chloro-5,5-dimethylhydantoin

Hazardous decomposition products

When heated to decomposition it emits toxic vapors of /nitrogen oxides, hydrogen bromide, and hydrogen chloride/.

SECTION 11: Toxicological information

Acute toxicity

  • Oral: LD50 Rat oral 1390 mg/kg
  • Inhalation: no data available
  • Dermal: no data available
  • Skin corrosion/irritation

    no data available

    Serious eye damage/irritation

    no data available

    Respiratory or skin sensitization

    no data available

    Germ cell mutagenicity

    no data available


    no data available

    Reproductive toxicity

    no data available

    STOT-single exposure

    no data available

    STOT-repeated exposure

    no data available

    Aspiration hazard

    no data available

    SECTION 12: Ecological information


  • Toxicity to fish: LC50; Species: Pimephales promelas (Fathead minnow); Conditions: freshwater, static; Concentration: 14100 ppm for 96 hr (95% confidence interval: 13386-14990 ppm) /97% purity
  • Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water flea) juvenile; Conditions: freshwater, flow through; Concentration: 0.1 ppm for 96 hr; Effect: intoxication, immobilization /96% purity
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available
  • Persistence and degradability

    no data available

    Bioaccumulative potential

    An estimated BCF of 3 was calculated in fish for 1-bromo-3-chloro-5,5-dimethylhydantoin(SRC), using a log Kow of 0.35(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

    Mobility in soil

    Using a structure estimation method based on molecular connectivity indices(1), the Koc of 1-bromo-3-chloro-5,5-dimethylhydantoin can be estimated to be 10(SRC). According to a classification scheme(2), this estimated Koc value suggests that 1-bromo-3-chloro-5,5-dimethylhydantoin is expected to have very high mobility in soil(SRC).

    Other adverse effects

    no data available

    SECTION 13: Disposal considerations

    Disposal methods


    The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

    Contaminated packaging

    Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

    SECTION 14: Transport information

    UN Number

    ADR/RID: UN3085 (For reference only, please check.)

    IMDG: UN3085 (For reference only, please check.)

    IATA: UN3085 (For reference only, please check.)

    UN Proper Shipping Name

    ADR/RID: OXIDIZING SOLID, CORROSIVE, N.O.S. (For reference only, please check.)

    IMDG: OXIDIZING SOLID, CORROSIVE, N.O.S. (For reference only, please check.)

    IATA: OXIDIZING SOLID, CORROSIVE, N.O.S. (For reference only, please check.)

    Transport hazard class(es)

    ADR/RID: 5.1 (For reference only, please check.)

    IMDG: 5.1 (For reference only, please check.)

    IATA: 5.1 (For reference only, please check.)

    Packing group, if applicable

    ADR/RID: I (For reference only, please check.)

    IMDG: I (For reference only, please check.)

    IATA: I (For reference only, please check.)

    Environmental hazards

    ADR/RID: Yes

    IMDG: Yes

    IATA: Yes

    Special precautions for user

    no data available

    Transport in bulk according to IMO instruments

    no data available

    SECTION 15: Regulatory information

    Safety, health and environmental regulations specific for the product in question

    European Inventory of Existing Commercial Chemical Substances (EINECS)
    EC Inventory
    United States Toxic Substances Control Act (TSCA) Inventory
    China Catalog of Hazardous chemicals 2015
    Not Listed.
    New Zealand Inventory of Chemicals (NZIoC)
    Vietnam National Chemical Inventory
    Korea Existing Chemicals List (KECL)

    SECTION 16: Other information

    Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%
  • References

  • IPCS - The International Chemical Safety Cards (ICSC), website:
  • HSDB - Hazardous Substances Data Bank, website:
  • IARC - International Agency for Research on Cancer, website:
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA - European Chemicals Agency, website:
  • Disclaimer:

    The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.

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