Acetic Acid
C2H4O2
acetic acid
Consulting for Acetic Acid
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Identification
- CAS Number
- 64-19-7
- EC Number
- 200-580-7
- UN Number
- 2789
- Index Number
- 607-001-00-0
- PubChem CID
- 176
Physical-chemical properties
- Molecular Formula
- C2H4O2
- Molar Mass
- 60.05 g/mol
- IUPAC Name
- acetic acid
Chemical Identifiers
- InChI
- InChI=1S/C2H4O2/c1-2(3)4/h1H3,(H,3,4)
- InChI Key
- QTBSBXVTEAMEQO-UHFFFAOYSA-N
Overview
Acetic Acid (CAS 64-19-7) is a carboxylic acid with corrosive properties and distinctive pungent odor. As one of the most important organic acids in industrial chemistry, acetic acid serves as a fundamental building block for numerous chemical processes and applications. This colorless liquid compound, with the molecular formula C2H4O2 and molecular weight of 60.05 g/mol, is characterized by its sharp, vinegar-like smell and highly corrosive nature. The substance is classified under multiple hazard categories, including Flammable Liquid Category 3 and Skin Corrosive Category 1A, requiring careful handling protocols in industrial environments. The compound exhibits excellent solubility in water and most organic solvents, making it versatile for various chemical reactions and formulations. Its corrosive properties demand strict safety measures, as indicated by the GHS02 and GHS05 pictograms and ADR Class 8 classification for transport purposes. Unlike basic compounds such as ethane-1,2-diamine, acetic acid demonstrates strong acidic behavior with a pH significantly below neutral, making it particularly effective in applications requiring acidic conditions. Acetic acid finds extensive use across multiple industrial sectors, including the production of vinyl acetate monomer for polymers, cellulose acetate manufacturing for textiles and plastics, and as a key reagent in pharmaceutical synthesis. The compound also serves as an essential component in food processing and preservation industries, where its antimicrobial properties prove valuable. Additionally, it functions as a solvent and catalyst in various organic synthesis reactions, similar to how N,N-dimethyl-1-phenylmethanamine serves specialized roles in pharmaceutical applications. OYSI provides high-quality acetic acid to meet diverse industrial requirements across European markets.
Safety & Classification
Flam. Liq. 3; Skin Corr. 1A
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
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
Skin Contact
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
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:
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 Number | 2789 |
| ADR Class | 8 |
| Packing Group | II |
| Tunnel Code | D/E |
| Proper Shipping Name | Eisessig, technisch rein, Konz. >= 99,7 % |
| Marine Pollutant | No |
Frequently Asked Questions
What is Acetic Acid?
Acetic Acid is a colorless organic compound with the chemical formula C2H4O2 and molecular weight of 60.05 g/mol. It is a carboxylic acid characterized by its distinctive pungent, vinegar-like odor. Also known as ethanoic acid, it occurs naturally in various biological processes and is widely used in industrial applications. Acetic acid is classified as a flammable liquid and corrosive substance, requiring careful handling due to its hazardous properties.
What are the physico-chemical properties of Acetic Acid?
Acetic Acid appears as a clear, colorless liquid with a characteristic sharp, vinegar-like odor that is easily recognizable. It is completely miscible with water and most organic solvents, making it highly versatile for various applications. The substance has a boiling point of 118°C and freezing point of 16.6°C. It is hygroscopic, meaning it readily absorbs moisture from air, and exhibits strong acidic properties with corrosive characteristics toward metals and organic materials.
What is Acetic Acid used for?
Acetic Acid serves multiple industrial and commercial purposes, primarily as a chemical intermediate in manufacturing processes. It is extensively used in the production of vinyl acetate monomer, acetic anhydride, and various acetate esters. The substance plays a crucial role in textile industry for dyeing and finishing processes, food industry as a preservative and acidulant, and pharmaceutical manufacturing. Additionally, it is employed in cleaning applications, pH adjustment, and as a solvent in chemical synthesis reactions.
How to handle Acetic Acid safely?
Acetic Acid requires careful handling due to its corrosive and flammable properties (Skin Corr. 1A, Flam. Liq. 3). Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Work in well-ventilated areas or use local exhaust ventilation to avoid inhalation of vapors. Keep away from ignition sources, heat, and incompatible materials. Always use appropriate handling equipment and ensure emergency shower and eyewash stations are readily accessible.
How to store Acetic Acid correctly?
Acetic Acid must be stored in a cool, dry, well-ventilated area away from heat sources and ignition points due to its flammable nature. Use corrosion-resistant containers made of stainless steel, glass, or compatible plastics, as it can corrode common metals. Keep containers tightly sealed to prevent moisture absorption and vapor release. Store separately from strong bases, oxidizing agents, and reactive metals. Maintain storage temperatures below 25°C and ensure proper spill containment measures are in place.
What to do in case of contact with Acetic Acid?
Acetic Acid contact requires immediate emergency response due to its corrosive properties. For skin contact, immediately flush the affected area with copious amounts of water for at least 15 minutes while removing contaminated clothing. In case of eye contact, rinse thoroughly with water for at least 15 minutes and seek immediate medical attention. If inhaled, move the person to fresh air and provide respiratory support if needed. For ingestion, do not induce vomiting and seek immediate medical care.
How to dispose of Acetic Acid properly?
Acetic Acid disposal must comply with local, national, and European waste regulations as it is classified as hazardous waste. Small quantities can be neutralized carefully with sodium bicarbonate under controlled conditions before disposal, but this should only be done by trained personnel. Larger quantities require collection by licensed hazardous waste disposal companies. Never discharge directly into sewers, waterways, or soil. Maintain proper documentation of disposal activities and ensure waste containers are properly labeled according to regulatory requirements.
How to transport Acetic Acid?
Acetic Acid is classified under ADR transport regulations as Class 8 (Corrosive substances), Packing Group II, indicating moderate danger level. Transportation requires appropriate UN-approved packaging designed for corrosive liquids, with proper labeling including corrosive and flammable hazard symbols. Vehicles must carry appropriate emergency equipment and drivers need ADR training certification. Transport documentation must include proper shipping names, hazard classes, and emergency contact information. Ensure compliance with tunnel restrictions and routing requirements for hazardous materials.
Is Acetic Acid subject to specific regulations?
Acetic Acid is regulated under European REACH regulation requiring registration for commercial use, though it is not classified as a Substance of Very High Concern (SVHC). It falls under CLP regulation with mandatory hazard classification as Flam. Liq. 3 and Skin Corr. 1A, requiring appropriate labeling with GHS02 and GHS05 pictograms and "Danger" signal word. Industrial users must comply with occupational exposure limits and safety data sheet requirements. Some applications may require additional permits or notifications depending on usage quantities and local regulations.
Where to buy Acetic Acid in Europe?
Acetic Acid is readily available through OYSI, a trusted European distributor of technical chemicals serving industrial customers across Europe. OYSI provides high-quality acetic acid with proper documentation, safety data sheets, and regulatory compliance support. As a specialized chemical distributor, OYSI ensures reliable supply chains, technical expertise, and customer service for businesses requiring acetic acid for various industrial applications. Contact OYSI directly for pricing, availability, and delivery options tailored to your specific requirements and location within Europe.
Digital Product Passport available
EU DPPA Digital Product Passport (DPP) compliant with EU regulations is available for this substance. The passport contains complete information on composition, safety, and sustainability.
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ADR Consulting for Acetic Acid
Acetic Acid is a dangerous good. We support you with labeling, packaging, and transport documentation.
Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.