Industrial chemicals · Taylor, TXTechnical Data Sheet
Oxalic Acid ACS Grade
ACS Grade
Identity & Composition
- Product Name
- Oxalic Acid ACS Grade
- Alliance Code
- oxalic-acid-acs-grade
- Grade
- ACS Grade
- Concentration
- —
- CAS Number
- 144-62-7PubChem
- Formula
- C2H2O4PubChem
- Molecular Weight
- 90.03PubChem
- Product Type
- pure_substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay | 99.5-102.5% | 101.0 % | Redox Titration | Supplier specification |
| Calcium (Ca) | 0.001 % max | 0.0002 % | — | ACS Reagent Chemicals |
| Chloride (Cl) | 0.002 % max | 0.0003 % | — | ACS Reagent Chemicals |
| Heavy metals | 5 ppm max | 0.5 ppm | ICP-OES | ACS Reagent Chemicals |
| Insoluble material | ≤0.005% | 0.001% | — | Supplier specification |
| Iron (Fe) | 2 ppm max | 0.3 ppm | — | ACS Reagent Chemicals |
| Nitrogen compounds (as N) | ≤0.001% | 0.0002 % | — | Supplier specification |
| Residue after ignition | 0.01 % max | 0.002 % | — | ACS Reagent Chemicals |
| Substances darkened by hot sulfuric acid | To pass test | Passes test | — | ACS Reagent Chemicals |
| Sulfates (SO4) | 0.005 % max | 0.001 % | — | ACS Reagent Chemicals |
| Identification (Infrared absorption) | Conforms to reference spectrum of oxalic acid dihydrate | Passes test | FTIR, KBr disc, comparison to reference spectrum | Interpreted |
Specification values are guaranteed limits. Typical values are representative of production lots and are not guaranteed. Lot-specific certificates of analysis ship with every order.
Real-Lot StatisticsBased on 1 lot over the last 24 months
Lot statistics not yet available for this product — need at least 3 lots, have 1.
Aggregated from real laboratory measurements on shipped lots. Source: Alliance Chemical lot records. Not a specification.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Oxalic acid is an odorless white solid. Sinks and mixes with water. (USCG, 1999) | Published reference |
| Form | Solid | Published reference |
| Odor | Odorless. | Published reference |
| Density | 1.9 at 59 °F (USCG, 1999) - Denser than water; will sink | Published reference |
| Boiling Point | Sublimes (NIOSH, 2024) | Published reference |
| Melting Point | 99 - 102 C (with decomposition) | Interpreted |
| Vapor Pressure | 0.001 mmHg at 68 °F (NTP, 1992) | Published reference |
| Solubility (water) | 50 to 100 mg/mL at 75 °F (NTP, 1992) | Published reference |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- Not regulatedAdjudicated
- Hazard Class
- Not regulatedAdjudicated
- Packing Group
- Not regulatedAdjudicated
- Proper Shipping Name
- Not regulatedAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H302, H312, H315, H318, H373Adjudicated
- P-Codes (Precautionary Statements)
- P264, P270, P280, P301+P312, P302+P352, P305+P351+P338, P310, P313, P321, P330, P362, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- —no canonical
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: ECHA CLP Annex VI for harmonised classifications, NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Oxalic Acid ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Laboratory, research or manufacturing use as an ACS reagent, including as a reagent meeting specifications for testing USP/NF monographsdigitalassets.avantorsciences.com
- Used as an analytical quality standard / reagent against which other substances are gradedsciencelab.com
- Industrial use as a precipitating agent in rare earth mineral processing, bleaching agent for textiles and wood pulp, and rust remover in metal treatmentwintersunchem.com
- Marble polishing/grinding, waste water treatment, calcium removal from water, equipment cleaning and sterilizing, and photographic reducing / ink removalwintersunchem.com
- Removal of food and rust stains from countertops, plumbing fixtures and fabricswintersunchem.com
- Functions as a chelating agent, fixative, bleaching agent, analytical reagent and cleanerwintersunchem.com
- Used in the dyeing industry as a mordant and as a cleaning agentsciencelab.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Storage: Room Temperaturempbio.com
- Handling Precautions
- Use standard chemical PPE — splash goggles, gloves, lab coat. Refer to SDS for hazard-specific PPE requirements.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Consult the SDS for material-specific incompatibilities.Class-level guidance — not product-specific; the SDS controls.
- Shelf Life
- Consult Technical Services for product-specific shelf life
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
Not regulated for transport.
Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-07-17 by Andre Taki, DOT Hazmat Specialist.
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.3 | 2026-07-22 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 10 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.2 | 2026-07-17 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.