Ethane-1,2-diol

C2H6O2

ethane-1,2-diol

CAS107-21-1
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
Warning

Consulting for Ethane-1,2-diol

Our experts support you with application, dosage, and compliance.

Request Consultation

Identification

CAS Number
107-21-1
EC Number
203-473-3
UN Number
Index Number
603-027-00-1
PubChem CID
174

Physical-chemical properties

Molecular Formula
C2H6O2
Molar Mass
62.07 g/mol
IUPAC Name
ethane-1,2-diol

Chemical Identifiers

InChI
InChI=1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
InChI Key
LYCAIKOWRPUZTN-UHFFFAOYSA-N

Overview

Ethane-1,2-diol (CAS 107-21-1) is a simple diol alcohol with excellent solvent properties and hygroscopic characteristics. This versatile organic compound, commonly known as ethylene glycol, represents one of the most important industrial chemicals in modern manufacturing. With its molecular formula C2H6O2 and molecular weight of 62.07 g/mol, ethane-1,2-diol features two hydroxyl groups attached to adjacent carbon atoms, giving it unique chemical properties that make it invaluable across numerous applications. The compound appears as a colorless, odorless, viscous liquid with a sweet taste, though it carries significant toxicity concerns. Its hygroscopic nature allows it to readily absorb moisture from the atmosphere, while its miscibility with water and many organic solvents makes it an excellent medium for various chemical processes. The presence of two hydroxyl groups enables hydrogen bonding, contributing to its relatively high boiling point and viscosity compared to similar molecular weight compounds. From a safety perspective, ethane-1,2-diol is classified under Acute Toxicity Category 4, requiring careful handling procedures. The GHS07 pictogram and "Warning" signal word indicate moderate hazard levels, necessitating appropriate personal protective equipment and ventilation systems during industrial use. Primary industrial applications include antifreeze formulations for automotive cooling systems, production of polyethylene terephthalate (PET) plastics, and as a key component in hydraulic fluids. Unlike simpler alcohols such as hexan-1-ol, ethane-1,2-diol's dual hydroxyl functionality provides superior performance in polymer synthesis and thermal management applications. OYSI maintains reliable supplies of technical-grade ethane-1,2-diol to support diverse European industrial requirements, backed by comprehensive technical support and regulatory compliance documentation.

Safety & Classification

Warning
Classification:

Acute Tox. 4 *

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H302

Harmful if swallowed.

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

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.

Frequently Asked Questions

What is ethane-1,2-diol?

Ethane-1,2-diol is a simple diol organic compound with the molecular formula C2H6O2 and CAS number 107-21-1. Also known as ethylene glycol, it is a colorless, viscous liquid with a molecular weight of 62.07 g/mol. This chemical belongs to the alcohol family and contains two hydroxyl groups, making it highly polar and water-soluble. It is classified as Acute Tox. 4 under GHS regulations, indicating moderate acute toxicity requiring careful handling in industrial applications.

What are the physicochemical properties of ethane-1,2-diol?

Ethane-1,2-diol is a colorless, odorless, viscous liquid at room temperature with a sweet taste. It has excellent solubility in water and polar solvents due to its two hydroxyl groups, which enable strong hydrogen bonding. The compound has a high boiling point and low volatility, making it stable under normal conditions. Its hygroscopic nature allows it to absorb moisture from air, and it exhibits good thermal stability within its operating temperature range for most applications.

What is ethane-1,2-diol used for?

Ethane-1,2-diol is primarily used as antifreeze and coolant in automotive and industrial cooling systems due to its ability to lower freezing points. It serves as a key raw material in polyester and polyethylene terephthalate (PET) production for textiles and plastic bottles. Additional applications include use as a solvent in paints and plastics, a humectant in cosmetics and personal care products, and as a component in hydraulic fluids and heat transfer systems.

How to handle ethane-1,2-diol safely?

Ethane-1,2-diol requires careful handling due to its Acute Tox. 4 classification and GHS07 warning pictogram. Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Ensure adequate ventilation in work areas and avoid ingestion or inhalation of vapors. Keep containers tightly closed when not in use and wash hands thoroughly after handling. Never mix with incompatible materials and follow all safety data sheet recommendations.

How to store ethane-1,2-diol correctly?

Ethane-1,2-diol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep away from incompatible materials such as strong oxidizing agents and acids to prevent dangerous reactions. Store in original labeled containers made of compatible materials and maintain temperatures within recommended ranges. Implement proper inventory rotation using first-in-first-out principles and ensure storage areas have appropriate spill containment measures and emergency equipment readily available.

What to do in case of contact with ethane-1,2-diol?

Ethane-1,2-diol contact requires immediate first aid measures due to its toxicity classification. For skin contact, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If eye contact occurs, flush immediately with clean water for at least 15 minutes and remove contact lenses if present. In case of ingestion, do not induce vomiting and seek immediate medical attention. For inhalation, move to fresh air immediately and seek medical help if symptoms develop.

How to dispose of ethane-1,2-diol appropriately?

Ethane-1,2-diol disposal must comply with local, national, and European waste regulations as it is classified as hazardous waste. Do not discharge into drains, sewers, or surface waters due to environmental toxicity concerns. Contact licensed waste disposal companies for proper treatment and disposal methods, which may include incineration at authorized facilities or chemical treatment. Maintain detailed waste disposal records and ensure all containers are properly labeled with waste identification codes according to applicable regulations.

How to transport ethane-1,2-diol?

Ethane-1,2-diol transport should follow general dangerous goods regulations despite not having a specific ADR classification listed. Use appropriate packaging that meets UN specification requirements for liquid chemicals and ensure containers are properly sealed and labeled with correct hazard information. Transport vehicles should be equipped with appropriate emergency equipment and drivers must be trained in chemical transport procedures. Maintain proper documentation including safety data sheets and ensure compliance with route restrictions and quantity limitations.

Is ethane-1,2-diol subject to specific regulations?

Ethane-1,2-diol is subject to REACH regulation requiring registration for substances produced or imported above one tonne per year in the EU. It falls under CLP regulation with mandatory classification as Acute Tox. 4 and requires appropriate labeling with GHS07 pictogram and warning signal word. The substance is not currently listed as SVHC (Substance of Very High Concern). Manufacturers and users must comply with safety data sheet requirements and may face additional sector-specific regulations depending on application areas.

Where to buy ethane-1,2-diol in Europe?

Ethane-1,2-diol is available through OYSI, a trusted European distributor of technical chemicals serving various industries across the continent. OYSI provides reliable supply chains and maintains high quality standards for chemical distribution. As a professional chemical distributor, OYSI offers comprehensive technical support, proper documentation including safety data sheets, and ensures compliance with European regulations. Contact OYSI directly for specific availability, packaging options, and delivery arrangements to meet your industrial requirements for ethane-1,2-diol.

Data Sources

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