Chloroform

CHCl3

chloroform

CAS67-66-3
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS06 Gefahrensymbol: Giftig – Totenkopf mit Knochen
Danger

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Identification

CAS Number
67-66-3
EC Number
200-663-8
UN Number
1888
Index Number
602-006-00-4
PubChem CID
6212

Physical-chemical properties

Molecular Formula
CHCl3
Molar Mass
119.37 g/mol
IUPAC Name
chloroform

Chemical Identifiers

InChI
InChI=1S/CHCl3/c2-1(3)4/h1H
InChI Key
HEDRZPFGACZZDS-UHFFFAOYSA-N

Overview

Chloroform (CAS 67-66-3) is a halogenated organic solvent with high volatility and significant industrial utility. This trihalomethane compound, with molecular formula CHCl3, represents one of the most recognized chlorinated hydrocarbons in industrial chemistry. Despite its historical medical applications, modern regulatory frameworks classify chloroform as a Category 2 carcinogen and reproductive toxicant, requiring stringent handling protocols and specialized safety measures. The compound exhibits characteristic properties including high density (1.48 g/cm³), moderate boiling point (61°C), and excellent solvating capabilities for various organic materials. Chloroform's chemical structure features three chlorine atoms bonded to a central carbon atom with one hydrogen, creating a polar molecule with distinctive physical properties. Unlike simpler compounds such as chloromethylbenzene, chloroform maintains stability under standard conditions while demonstrating reactivity toward strong bases and metals. The substance appears as a colorless liquid with a sweet, ethereal odor, though prolonged exposure presents significant health risks including central nervous system depression and potential organ damage. Primary industrial applications include solvent operations in chemical synthesis, particularly in pharmaceutical intermediate production and specialty chemical manufacturing. The compound serves as an effective extraction medium for various organic compounds and finds use in analytical chemistry applications. Additionally, chloroform functions as a chemical precursor in refrigerant production, specifically in HCFC-22 synthesis for industrial cooling systems. Given its ADR Class 6.1 classification and associated GHS08 and GHS06 pictograms, chloroform requires specialized transportation, storage, and handling expertise. OYSI provides technical-grade chloroform with comprehensive safety documentation and regulatory compliance support for qualified industrial customers across European markets.

Safety & Classification

Danger
Classification:

Carc. 2; Repr. 2; Acute Tox. 3; Acute Tox. 4; STOT RE 1; Skin Irrit. 2; Eye Irrit. 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H351

Suspected of causing cancer.

H331

Toxic if inhaled.

H302

Harmful if swallowed.

H372

Causes damage to organs through prolonged or repeated exposure.

H315

Causes skin irritation.

H319

Causes serious eye irritation.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Toxic

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Irritant

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Irritant

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Harmful

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1888
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping NameChloroform
Marine PollutantNo

Frequently Asked Questions

What is chloroform?

Chloroform is a volatile organic compound with the chemical formula CHCl3 and CAS number 67-66-3. It is a trihalomethane with a molecular weight of 119.37 g/mol. This substance is classified as a carcinogen category 2 and reproductive toxicant category 2, making it a highly regulated chemical requiring careful handling and specialized applications in industrial settings.

What are the physicochemical properties of chloroform?

Chloroform is a colorless, dense liquid at room temperature with a characteristic sweet odor. It has a boiling point of 61.2°C and is denser than water with a specific gravity of approximately 1.48. The compound is slightly soluble in water but miscible with most organic solvents including alcohols, ethers, and hydrocarbons, making it an effective solvent for many organic materials.

What is chloroform used for?

Chloroform is primarily used as an intermediate in the production of refrigerant gases, particularly HCFC-22. It serves as a solvent in laboratory applications, pharmaceutical manufacturing, and chemical synthesis processes. Due to its carcinogenic properties, its use has been significantly restricted, and it is mainly employed in controlled industrial processes where safer alternatives are not available.

How to handle chloroform safely?

Chloroform requires strict safety measures due to its acute toxicity and carcinogenic properties. Personnel must wear appropriate respiratory protection, chemical-resistant gloves, and protective clothing. Work should be conducted in well-ventilated areas or fume hoods to prevent inhalation. Skin and eye contact must be avoided, and emergency eyewash stations should be readily accessible during handling operations.

How to store chloroform correctly?

Chloroform must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. It should be kept in tightly sealed containers made of compatible materials such as glass or certain plastics. Storage areas should be equipped with appropriate ventilation systems and spill containment measures. The substance should be segregated from incompatible materials including strong bases and metals.

What to do in case of contact with chloroform?

Immediate medical attention is required for any exposure to chloroform. In case of skin contact, remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. For eye contact, flush immediately with water for at least 15 minutes. If inhaled, move the person to fresh air and seek medical attention. Never induce vomiting if ingested.

How to dispose of chloroform appropriately?

Chloroform disposal must comply with local and international hazardous waste regulations due to its classification as a dangerous substance. It cannot be disposed of in regular waste streams or poured down drains. Professional hazardous waste disposal companies must handle the elimination process, typically involving high-temperature incineration at authorized facilities. Proper documentation and tracking are required throughout the disposal process.

How to transport chloroform?

Chloroform is classified under ADR Class 6.1 (toxic substances), Packing Group III, requiring specific packaging and labeling for transport. Packages must display the appropriate hazard labels including GHS06 and GHS08 pictograms with the signal word 'Danger'. Transport vehicles must carry emergency response information, and drivers require ADR certification for handling toxic substances during transportation across European borders.

Is chloroform subject to specific regulations?

Chloroform is heavily regulated under multiple European frameworks including REACH, CLP, and national chemical safety laws. Its classification as Carc. 2 and Repr. 2 subjects it to strict authorization requirements and exposure limits. Many consumer applications are prohibited, and industrial use requires comprehensive risk assessments, worker protection measures, and environmental monitoring to ensure compliance with occupational health standards.

Where to buy chloroform in Europe?

OYSI serves as a reliable European distributor for chloroform, providing high-quality chemical products to industrial and research customers across Europe. As a specialized chemical supplier, OYSI ensures proper documentation, regulatory compliance, and safe delivery of chloroform to qualified buyers. Contact OYSI directly to discuss your specific requirements, quantities, and technical specifications for this regulated substance.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.