ChemicalBook
Chemical Safety Data Sheet MSDS / SDS

3-CHLOROCATECHOL

Revision Date:2026-03-20Revision Number:1

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

Product identifier

  • Product name: 3-CHLOROCATECHOL
  • CBnumber: CB2758422
  • CAS: 4018-65-9
  • Synonyms: 3-Chloropyrocatechol;3-MONOCHLOROCATECHOL

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: 010-86108875

SECTION 2: Hazards identification

GHS Label elements, including precautionary statements

  • Symbol(GHS)
  • Signal wordWarning
Precautionary statements
P501 Dispose of contents/container to..…
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P271 Use only outdoors or in a well-ventilated area.
P270 Do not eat, drink or smoke when using this product.
P264 Wash skin thouroughly after handling.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
Hazard statements
H319 Causes serious eye irritation
H315 Causes skin irritation

SECTION 3: Composition/information on ingredients

Substance

  • Product name: 3-CHLOROCATECHOL
  • Synonyms: 3-Chloropyrocatechol;3-MONOCHLOROCATECHOL
  • CAS: 4018-65-9
  • MF: C6H5ClO2
  • MW: 144.56

SECTION 4: First aid measures

If inhaled

Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER or doctor/ physician if you feel unwell.

In case of skin contact

Take off all contaminated clothing immediately. Wash off with soap and plenty of water. Call a POISON CENTER or doctor/ physician if you feel unwell.

In case of eye contact

Rinse with plenty of water. If easy to do, remove contact lens, if worn. If eye irritation persists: Get medical advice/ attention.

If swallowed

Call a POISON CENTER or doctor/ physician if you feel unwell. Rinse mouth.

Most important symptoms and effects, both acute and delayed

None known.

SECTION 5: Firefighting measures

Suitable extinguishing media

Dry powder, Foam, Water spray, Carbon dioxide (CO2)

Specific hazards during fire fighting

No information available.

Specific extinguishing methods

Use extinguishing measures that are appropriate to local circumstances and the surrounding environment. Immediately evacuate personnel to safe areas. Remove undamaged containers from fire area if it is safe to do so.

Special protective equipment for fire-fighters

Use personal protective equipment.

SECTION 6: Accidental release measures

Personal precautions, protective equipment and emergency procedures

Wear suitable protective equipment. Keep people away from and upwind of spill/leak. Entry to non-involved personnel should be controlled around the leakage area by roping off, etc.

Environmental precautions

Prevent product from entering drains.

Methods and materials for containment and cleaning up

Pick up and arrange disposal without creating dust.

SECTION 7: Handling and storage

Handling

Technical measures
Prevent dispersion of dust.
Local/Total ventilation
Ensure adequate ventilation. Use a local exhaust ventilation.
Advice on safe handling
Avoid contact with skin, eyes and clothing. Wear personal protective equipment. Wash hands and face thoroughly after handling.
Avoidance of contact
Oxidizing agents

Storage

Conditions for safe storage
Keep container tightly closed. Store in a cool and shaded area. Protect from moisture. Keep under inert gas.

SECTION 8: Exposure controls/personal protection

Ingredients with workplace control parameters

Contains no substances with occupational exposure limit values.

Engineering measures

Install a closed system or local exhaust.
Also install safety shower and eye bath.

Personal protective equipment

Respiratory protection
Dust mask
Eye/face protection
Safety glasses
Face-shield
Skin and body protection
Protective suit
Hand protection
Protective gloves *Use personal protective equipment(PPE) approved under appropriate government standards and follow local and national regulations.

SECTION 9: Physical and chemical properties

Information on basic physicochemical properties

  • Density and/or relative density1.471
  • Physical stateSolid
  • Molecular weight144.55 g/mol
  • Viscosity, kinematicNo data available
  • Viscosity, dynamicNo data available
  • Decomposition temperatureNo data available
  • Autoignition temperatureNo data available
  • Partition coefficient: n-octanol/waterNo data available
  • Solubility in other solventsChloroform (Slightly), Methanol (Slightly)
  • Water solubilityNo data available
  • Solubility(ies)Chloroform (Slightly), Methanol (Slightly)
  • Vapor pressureNo data available
  • Lower explosion limit / Lower flammability limitNo data available
  • Upper explosion limit / Upper flammability limitNo data available
  • FlammabilityNo data available
  • Evaporation rateNo data available
  • Flash point97℃
  • Boiling point/boiling range138 °C (27 hPa)
  • Melting point/freezing point49 °C
  • pHNo data available
  • Odor ThresholdNo data available
  • OdorNo data available
  • Colorwhite - yellow
  • Appearancesolid

SECTION 10: Stability and reactivity

Reactivity

No data available

Chemical stability

Stable under normal conditions.

Possibility of hazardous reactions

None under normal processing.

Conditions to avoid

Exposure to moisture.

Incompatible materials

Oxidizing agents

Hazardous decomposition products

Carbon monoxide, Carbon dioxide (CO2), Hydrogen chloride gas

SECTION 11: Toxicological information

Acute toxicity

Product

Acute oral toxicity

Assessment: The component/mixture is moderately toxic after single ingestion.

Acute inhalation toxicity

Assessment: The component/mixture is moderately toxic after short term inhalation.

Acute dermal toxicity

Assessment: The component/mixture is moderately toxic after single contact with skin.

Components

3-Chlorocatechol

Acute oral toxicity

Assessment: The component/mixture is moderately toxic after single ingestion.

Acute inhalation toxicity

Assessment: The component/mixture is moderately toxic after short term inhalation.

Acute dermal toxicity

Assessment: The component/mixture is moderately toxic after single contact with skin.

Skin corrosion/irritation

Product

Result

Skin irritation

Components

3-Chlorocatechol

Result

Skin irritation

Serious eye damage/eye irritation

Product

Result

Eye irritation

Components

3-Chlorocatechol

Result

Eye irritation

Respiratory or skin sensitization

Classified based on available data. For more details, see section 2.

Germ cell mutagenicity

Classified based on available data. For more details, see section 2.

Carcinogenicity

Classified based on available data. For more details, see section 2.

Reproductive toxicity

Classified based on available data. For more details, see section 2.

STOT-single exposure

Classified based on available data. For more details, see section 2.

STOT-repeated exposure

Classified based on available data. For more details, see section 2.

Repeated dose toxicity

Classified based on available data. For more details, see section 2.

Aspiration toxicity

Classified based on available data. For more details, see section 2.

SECTION 12: Ecological information

Ecotoxicity

No data available

Persistence and degradability

No data available

Bioaccumulative potential

No data available

Mobility in soil

No data available

Other adverse effects

No data available

SECTION 13: Disposal considerations

Disposal methods

Waste from residues
Disposal in accordance with local and national regulations. Entrust disposal to a licensed waste disposal company.
Contaminated packaging
Disposal in accordance with local and national regulations. Before disposal of used container, remove contents completely.

SECTION 14: Transport information

International Regulations

IATA-DGR

UN/ID No.
Not applicable
Proper shipping name
Not applicable
Class
Not applicable
Subsidiary risk
Not applicable
Packing group
Not applicable

IMDG-Code

UN number
Not applicable
Proper shipping name
Not applicable
Class
Not applicable
Subsidiary risk
Not applicable
Packing group
Not applicable
EmS Code
Not applicable

Domestic regulation

GB 6944/12268

UN number
Not applicable
Proper shipping name
Not applicable
Class
Not applicable
Subsidiary risk
Not applicable
Packing group
Not applicable

SECTION 15: Regulatory information

Measures on the Environmental Administration of New Chemical Substances Registration

Registration/Notification number
B1A232216283
Downstream users need to comply with the conditions of safe use of the chemical, understand the environmental and health hazard and risk management measures identified on the SDS as well as the local/national regulations concerning the chemical.

The ingredients of this product are reported in the following inventories

CH BAGREG
Not in compliance with the inventory
TSCA
Substance(s) not listed on TSCA inventory
AICS
Not in compliance with the inventory
DSL
This product contains the following components that are not on the
Canadian DSL nor NDSL.
3-Chlorocatechol
ENCS
Not in compliance with the inventory
ISHL
Not in compliance with the inventory
KECI
Not in compliance with the inventory
PICCS
Not in compliance with the inventory
IECSC
Not in compliance with the inventory
NZIoC
Not in compliance with the inventory

SECTION 16: Other information

Abbreviations and acronyms

CAS: Chemical Abstracts Service
TWA: Time-Weighted Average
STEL: Short-Term Exposure Limit
LD50: Lethal Dose 50%
LC50: Lethal Concentration 50%
EC50: Effective Concentration 50%
PEL: Permissible Exposure Limit
TLV: Threshold Limit Value
IMDG: International Maritime Dangerous Goods Code
IATA: International Air Transport Association
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
DOT: US Department of Transportation
NFPA: National Fire Protection Association
NIOSH: National Institute for Occupational Safety and Health
OSHA: Occupational Safety and Health Administration
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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