Oxalic Acid
White crystalline powder · CAS 144-62-7
DocumentsSpec sheet (PDF, 32 KB)Safety Data Sheet (PDF, 82 KB)
Overview
Oxalic Acid (CAS 144-62-7) is one of the acids & descalants products Suraj Chemicals supplies to industrial, institutional and manufacturing buyers across India from our Chennai base. It is commonly used for rust and scale removal from metal surfaces; bleaching agent for wood, leather and textiles; descaling of boilers and radiators, among other applications in the acids & descalants category. We pack Oxalic Acid in 25/50 kg bags, and can arrange bulk, drum or tanker quantities for larger requirements — full characteristics, applications and downloadable documentation are below, or you can request a quote directly.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Assay | min 99.60% |
| Sulphate (SO4) | max 2000 ppm |
| Iron (Fe) | max 10 ppm |
| Calcium (Ca) | max 10 ppm |
| Potassium (K) | max 10 ppm |
| Sodium (Na) | max 10 ppm |
These values come from our own lab test on Oxalic Acid. They vary slightly from batch to batch, so ask for a current certificate of analysis with your order.
Origin
- Imported – China
A certificate of analysis is supplied with every batch.
Applications
- Rust and scale removal from metal surfaces
- Bleaching agent for wood, leather and textiles
- Descaling of boilers and radiators
- Marble and stone cleaning
Safety & Handling Summary
| Topic | Summary |
|---|---|
| Signal word | Warning |
| GHS hazards | H302 — Harmful if swallowed H312 — Harmful in contact with skin H315 — Causes skin irritation H318 — Causes serious eye damage |
| Incompatible with | Strong Oxidizers, Silver/Mercury salts |
| Gloves | Chemical-resistant gloves (nitrile or PVC) recommended |
| Eye / face | Chemical safety goggles; face shield for splash-risk operations |
| Respiratory | Use a particulate (dust) respirator (e.g., FFP2/N95) where exposure limits may be exceeded or dust is generated |
| Body | Protective clothing/apron for operations with splash or dust exposure risk; safety footwear |
| Transport (road) | Confirm the shipping classification with us before dispatch — see Section 14 of the SDS |
| Emergency handling | First aid, fire-fighting and spill / release measures are in Sections 4–6 of the SDS. Emergency contact: +91 70927 22822 / +91 98402 84032. |
A summary of the Oxalic Acid Safety Data Sheet. The full SDS is the authority: download it at the top of this page and read it before first use. Hazard ratings can change with grade and concentration, so confirm the transport class for each consignment.
Buyer’s Notes
Choosing the grade. Oxalic acid dihydrate is sold on assay; this lot is around 99.6-99.7%. Low iron and sulphate figures matter for rust removal and bleaching of light materials, so ask for those with the batch report.
What to check on the spec sheet. Assay, sulphate, iron, calcium, sodium and potassium. Iron stains light-coloured work, so keep an eye on it for textile and wood bleaching.
Handling and storage. Toxic if swallowed and irritating to skin and eyes. Keep dry, away from alkalis and oxidisers, and use gloves and a dust mask when making up solution.
Where it is used. Rust and scale removal, bleaching of wood, leather and textiles, boiler descaling and marble or stone cleaning.
Frequently Asked Questions
What is Oxalic Acid?
Oxalic Acid is supplied by Suraj Chemicals as white crystalline powder, identified by CAS number 144-62-7. It falls under our Acids & Descalants range — see the Specification Sheet table above for its full characteristics.
What is Oxalic Acid used for?
Typical applications include: Rust and scale removal from metal surfaces; Bleaching agent for wood, leather and textiles; Descaling of boilers and radiators; Marble and stone cleaning.
How should Oxalic Acid be stored and handled?
Store in a dry, covered area away from moisture — toxic, handle with appropriate PPE.
What packaging and pack sizes does Suraj Chemicals supply Oxalic Acid in?
25/50 kg bags. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Oxalic Acid?
Typically around 12 months from date of manufacture in original, unopened packaging, stored in a cool, dry place away from moisture. Extended exposure to humid air can affect this product's quality, so keep containers tightly resealed between uses and avoid part-used bags sitting open. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.
Is Oxalic Acid hazardous to handle?
Yes. Oxalic Acid is classified under GHS (signal word: Warning) as: harmful if swallowed (H302); harmful in contact with skin (H312); causes skin irritation (H315); causes serious eye damage (H318). Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Specification Sheet, TDS or MSDS available for Oxalic Acid?
Yes. a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Oxalic Acid is also available above.
Can I get a sample or discuss order quantity for Oxalic Acid?
Yes. use the Request Price & Availability button or WhatsApp us with your required quantity, and our team will confirm pricing, minimum order quantity, sample availability and delivery timelines for Oxalic Acid.
Actual packaging as supplied by Suraj Chemicals
CAS Number
144-62-7
Appearance
White crystalline powder
Packaging
25/50 kg bags
Storage & Handling
Store in a dry, covered area away from moisture — toxic, handle with appropriate PPE.
Shelf Life
Typically around 12 months from date of manufacture in original, unopened packaging, stored in a cool, dry place away from moisture. Extended exposure to humid air can affect this product's quality, so keep containers tightly resealed between uses and avoid part-used bags sitting open. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.