Acetic acid is one of the oldest and most commercially important organic acids. It appears in textiles, rubber, pharmaceuticals, food processing, adhesives, polymers, printing inks, and chemical synthesis. But buyers need to be careful: glacial acetic acid and dilute industrial grades serve different industries and should not be specified interchangeably.
Supreme Petro Chemicals supplies acetic acid from Chennai in industrial and selected higher-grade requirements. This guide explains the practical difference between grades and how manufacturers should specify the product.
What Is Acetic Acid?
Acetic acid has CAS number 64-19-7 and molecular formula CH3COOH. At high purity, usually 99.8%+, it is called glacial acetic acid. The term "glacial" comes from its freezing point: pure acetic acid solidifies at about 16.7°C, forming ice-like crystals in cool conditions.
Industrial buyers may also use dilute acetic acid grades such as 80% or 56%, depending on the process. The right grade depends on whether the acid is being used as a chemical feedstock, pH controller, coagulant, dyeing assistant, or food-grade ingredient.
Industrial Applications
- Textiles: Used as a dyeing assistant, pH adjuster, and mordant support in natural fibre dyeing.
- Pharmaceuticals: Used in synthesis of aspirin, vitamins, acetate esters, and selected intermediates where the correct grade is approved.
- PVA and PVC production: Glacial acetic acid is part of the vinyl acetate monomer chain, which feeds PVA and related polymer applications.
- Rubber: Used as a coagulant in latex processing, especially where controlled acidification is needed.
- Food processing: Used in vinegar and preservation only when food grade is specified and approved.
- Printing inks: Used in selected gravure ink solvent systems and acetate chemistry.
- Water treatment: Used for pH correction and chemical balancing in specific systems.
Glacial vs Dilute — Which Grade Do You Need?
| Application | Recommended Grade | Reason |
|---|---|---|
| Pharma / food | Food or pharmacopoeial grade only | Impurity limits and documentation are critical |
| PVA / chemical synthesis | Glacial acetic acid | High assay is required for predictable reaction performance |
| Textiles / rubber | 80% industrial often sufficient | Process requires acidity, not ultra-high purity |
If your process specification does not mention grade, concentration, or purity, confirm with production or QA before placing the order. Over-specifying raises cost. Under-specifying creates process and compliance risk.
Handling Precautions
Acetic acid is corrosive and can cause skin and eye burns. Glacial acetic acid is also flammable. Use acid-resistant gloves, splash goggles or face protection, protective clothing, and proper ventilation during handling.
Store acetic acid in corrosion-resistant tanks or containers. HDPE and stainless steel are commonly used depending on concentration and site conditions. Avoid incompatible metals and keep away from oxidising agents and alkalis.
Sourcing from SPC Chennai
SPC stocks glacial acetic acid and 80% industrial acetic acid in drums and IBC tanks, with Chennai-based dispatch for buyers across Tamil Nadu and South India. Provide grade, concentration, quantity, packing preference, and delivery location when requesting a quote.
Get a Quote
For acetic acid supply, call or WhatsApp our enquiry desk at +91 86087 80096, email Admin@supremepetrochemicals.com, or use the SPC enquiry form.
Specification Snapshot
The following are indicative specification values for the acetic acid grades SPC stocks in Chennai, taken from our own published product data. Always confirm against the batch-specific Certificate of Analysis before use.
- Purity (glacial grade): minimum 99.8%
- Appearance: Clear, colourless liquid with a pungent vinegar-like odour
- Density: 1.049 g/cm³ at 20°C
- Flash point: 39°C (closed cup)
- Boiling point: 118°C
- Melting/freezing point: 16.6°C (solidifies in cold weather)
- Grades available: Industrial, Technical, Glacial (minimum 99.8%), Food grade
- Packaging: 200L HDPE barrel, 35L HDPE carboy, 1000L IBC tank, bulk tanker
FAQ
What is the CAS number and HS code for acetic acid?
Acetic acid carries CAS number 64-19-7 and HS code 2915.21.00, with UN number 2789 used for transport documentation. Quote the CAS number on your purchase order so the grade supplied — industrial, technical, glacial or food — is never left ambiguous.
What packaging does SPC supply acetic acid in?
SPC supplies acetic acid ex-stock from Chennai in 200L HDPE barrels and 35L HDPE carboys, with 1000L IBC tanks and bulk tanker quantities arranged against requirement. HDPE and stainless steel are the recommended container materials, since acetic acid corrodes many common metals.
How do I get a quote for acetic acid from SPC?
Share your required grade, quantity, packaging preference and delivery location via the contact page. Quotes are typically answered within 4 working hours, Monday to Saturday.