Industrial chemicals · Taylor, TXTechnical Data Sheet
Citric Acid Monohydrate - USP Food Grade
USP Food Grade
Identity & Composition
- Product Name
- Citric Acid Monohydrate - USP Food Grade
- Alliance Code
- citric-acid-monohydrate-usp-food-grade
- Grade
- USP Food Grade
- Concentration
- —
- CAS Number
- 5949-29-1PubChem
- Formula
- C6H10O8PubChem
- Molecular Weight
- 210.14PubChem
- Product Type
- pure_substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (C6H8O7, anhydrous basis) | 99.5%-100.5% on the anhydrous basis | 100.0 % | Titration with 1 N sodium hydroxide VS to phenolphthalein; 1 mL = 64.03 mg C6H8O7 | USP monograph |
| Clarity of Solution | The Sample solution shows the same clarity as that of water or its opalescence is not more pronounced than Standard suspension A | Passes test | 200 mg/mL in water, compared with water and Standard suspension A | USP monograph |
| Description | Colorless, translucent crystals or a white, granular to fine, crystalline powder | Passes test | — | FCC |
| Heavy Metals | NMT 10 µg/g | 0.3 | Heavy Metals <231> | USP monograph |
| Lead | Not more than 0.5 mg/kg | 0.05 mg/kg | — | FCC |
| Oxalic Acid | ≤ 0.036 % | 0.0014 % | — | USP monograph |
| Residue on Ignition (USP) | NMT 0.1% | 0.007 % | Residue on Ignition <281>, 1.0 g | USP monograph |
| Readily Carbonizable Substances | Not darker than Matching Fluid K | Passes test | 1.0 g in 10 mL sulfuric acid, 90 ± 1 °C for 60 ± 0.5 min | USP monograph |
| Sulfate (SO4) | ≤ 0.015 % | 0.003 % | — | USP monograph |
| Tridodecylamine (solvent-extracted material only) | Not more than 0.1 mg/kg | 0.01 mg/kg | — | FCC |
| Water | 7.5%-9.0% | 8.6 % | Water Determination, Method I <921> (Karl Fischer), 0.5 g sample | USP monograph |
| Identification | Meets USP/FCC requirements | Passes test | USP citrate identification test / FTIR vs. reference standard | Interpreted |
| Arsenic (as As) | Not more than 1 mg/kg | 0.05 mg/kg | ICP-MS / FCC arsenic limit test | 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.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade USP Food Grade | — | — | current | current |
| ACS Reagent | — | — | citric-acid-monohydrate-acs-reagent-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 | Passes | Vendor COA |
| Form | Crystal | Published reference |
| Color | The Sample solution is not more intensely colored than water; if more intensely colored, not more intensely colored than Standard solutions A, B, and C | USP monograph |
| Density | 1.5 g/cm³ | Published reference |
| Boiling Point | 175 | Published reference |
| Melting Point | 135 °C | Published reference |
| Flash Point | 385 | Published reference |
| Solubility (water) | Solubility in water, g/100ml at 20 °C: 59.2 | Published reference |
Materials of Construction
| Material | Rating | Max T (°C) | Notes | Source |
|---|---|---|---|---|
Buna-N (NBR) elastomer | Good | 60 | Acceptable | Cole-Parmer Chemical Compatibility |
EPDM elastomer | Excellent | 100 | Standard for brine gaskets. | Parker O-ring Chemical Compatibility |
Viton (FKM) elastomer | Excellent | 100 | Preferred elastomer | Cole-Parmer Chemical Compatibility |
Borosilicate Glass glass ceramic | Excellent | 100 | Universally inert to salt solutions. | Cole-Parmer Chemical Compatibility |
Concrete (sealed) glass ceramic | Good | — | Acceptable with epoxy coating | Cole-Parmer Chemical Compatibility |
304 stainless steel metal | Fair | 25 | Pitting in chloride-rich service | Cole-Parmer Chemical Compatibility |
316L Stainless Steel metal | Good | 60 | Watch for chloride pitting above 60 °C in chloride salts. | NACE Chloride Pitting Guidelines |
Aluminium metal | Poor | — | Pitting; not recommended for brine | Cole-Parmer Chemical Compatibility |
Carbon steel metal | Poor | — | Rapid rust in brine | Cole-Parmer Chemical Compatibility |
FRP thermoplastic | Excellent | 60 | Common bulk-storage | Cole-Parmer Chemical Compatibility |
HDPE thermoplastic | Excellent | 60 | Universal salt brine compatibility. | Cole-Parmer Chemical Compatibility |
PP thermoplastic | Excellent | 80 | Acceptable for hot brine | Cole-Parmer Chemical Compatibility |
PVC thermoplastic | Excellent | 60 | Standard for brine piping. | Cole-Parmer Chemical Compatibility |
Ratings reflect the service envelope (concentration × temperature) shown. Always confirm against your specific duty cycle and contact-time before equipment selection. The most cautious rating across overlapping references is shown.
Materials Selection Tool
Showing 13 of 13 materials compatible at the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Good | 60 | Acceptable |
EPDM elastomer | Excellent | 100 | Standard for brine gaskets. |
Viton (FKM) elastomer | Excellent | 100 | Preferred elastomer |
Borosilicate Glass glass ceramic | Excellent | 100 | Universally inert to salt solutions. |
Concrete (sealed) glass ceramic | Good | — | Acceptable with epoxy coating |
304 stainless steel metal | Fair | 25 | Pitting in chloride-rich service |
316L Stainless Steel metal | Good | 60 | Watch for chloride pitting above 60 °C in chloride salts. |
Aluminium metal | Poor | — | Pitting; not recommended for brine |
Carbon steel metal | Poor | — | Rapid rust in brine |
FRP thermoplastic | Excellent | 60 | Common bulk-storage |
HDPE thermoplastic | Excellent | 60 | Universal salt brine compatibility. |
PP thermoplastic | Excellent | 80 | Acceptable for hot brine |
PVC thermoplastic | Excellent | 60 | Standard for brine piping. |
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
- WarningAdjudicated
- H-Codes (Hazard Statements)
- H315, H319, H335Adjudicated
- P-Codes (Precautionary Statements)
- P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P314, P321, P332+P313, P337+P313, P362, 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: 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 Citric Acid Monohydrate - USP Food Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Bulk pharmaceutical chemical (GMP manufactured) for manufacturing, processing or repackaging, with further processing required for injectable dosage formsassets.thermofisher.com
- USP monohydrate intended for use in dialysis solutions or, after further processing, injectable dosage formsmubychem.com
- FCC food-grade functions: sequestrant, dispersing agent, acidifier and flavoring agentmubychem.com
- 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
- Used in the preparation of injectable dosage forms after further processing.assets.thermofisher.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
- Preserve in Tight Containersassets.thermofisher.com
- Handling Precautions
- Standard chemical PPE — dust mask and goggles for handling of fine grades. Avoid generating airborne dust.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Specific incompatibilities depend on the salt — consult the SDS. Many salts react with strong acids to release gases.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 |
|---|---|---|---|
| 1.2 | 2026-07-22 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 7 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.