Industrial chemicals · Taylor, TXTechnical Data Sheet
Citric Acid Anhydrous - ACS Reagent Grade
ACS Reagent
- CAS number
- 77-92-9
- Structure
Structure · PubChem - Grade
- ACS Reagent
- Signal word
- Warning
- Hazards
Identity & Composition
- Product Name
- Citric Acid Anhydrous - ACS Reagent Grade
- Alliance Code
- citric-acid-anhydrous-acs-reagent-grade
- Grade
- ACS Reagent
- Concentration
- —
- CAS Number
- 77-92-9PubChem
- Formula
- C6H8O7PubChem
- Molecular Weight
- 192.12PubChem
- Product Type
- —
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay | Min 99.5% | 99.82% | — | Interpreted |
| Chloride | Max 0.001% | 0.00018% | — | Interpreted |
| Description | Fine granular | Passes test | — | Interpreted |
| Identification | To Pass Test | Passes test | — | Interpreted |
| Insoluble Matter | Max 0.005% | 0.0039% | — | Interpreted |
| Iron | Max 3 ppm | 0.22 ppm | — | Interpreted |
| Lead | Max 2 ppm | 0.028 ppm | — | Interpreted |
| Oxalate (C2O4) | To Pass Test | Passes test | — | Interpreted |
| Phosphate | Max 0.001% | 0.00010% | — | Interpreted |
| Residue after ignition | Max 0.02% | 0.0039% | — | Interpreted |
| Substances carbonizable by hot sulfuric acid | Passes test | Passes test | — | Interpreted |
| Sulfate | Max 0.002% | 0.00056% | — | Interpreted |
| Water (Karl Fischer) | Max 0.5% | 0.14% | Karl Fischer titration | Interpreted |
| arsenic | 1 ppm max | 0.037 ppm | — | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade ACS Reagent | — | — | current | current |
| Technical | 50% | — | citric-acid-50-solution | View TDS → |
| Technical | 25% | — | citric-acid-25-solution | View TDS → |
| Food | — | — | citric-acid-anhydrous-food-grade | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | White crystalline powder | Adjudicated |
| Odor | Odorless | Published reference |
| Density | 1.54 at 68 °F (USCG, 1999) - Denser than water; will sink | Published reference |
| Boiling Point | Decomposes (NTP, 1992) | Published reference |
| Melting Point | 307 °F (anhydrous) (NTP, 1992) | Adjudicated |
| Flash Point | 100 °C | Adjudicated |
| Solubility (water) | greater than or equal to 100 mg/mL at 72 °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 HCS 2024
- Signal Word
- WarningAdjudicated
- H-Codes (Hazard Statements)
- H319, H335Adjudicated
- P-Codes (Precautionary Statements)
- P261, P264, P271, P280, P304+P340, P305+P351+P338, P312, P337+P313, P403+P233, P405, 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: 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 Citric Acid Anhydrous - ACS Reagent Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Industrial use in the manufacture of ecologically compatible detergents, chemical cleaning, concrete admixtures and plasticizersingredi.com
- Used as a hydraulic fracturing / well stimulation chemical in oil and shale gas productionmubychem.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
- Keep containers tightly closed in a cool, dry, well-ventilated place away from sunlight and incompatible materials. Polypropylene packaging is suitable. Avoid dust formation when handling.Adjudicated
- 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
- Strong oxidizing agents; strong bases; reducing agents; nitrates.Adjudicated
- Shelf Life
- 60 monthslobachemie.comStore at 15-25 °C
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, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.4 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-10-07 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-09-30 | Canonical data updated: 3 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 |
| 1.0 | 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.