Oxalic Acid vs Citric Acid Solution
Comprehensive comparison of Oxalic Acid and Citric Acid Solution including physical properties, applications, safety considerations, and pricing. Alliance Chemical supplies both chemicals in various grades and concentrations.
Quick Comparison Summary
Physical & Chemical Properties Comparison
| Property | Oxalic Acid | Citric Acid Solution | Key Difference |
|---|---|---|---|
| Boiling Point | 149-160°C (decomposes) | 175 °C (decomposes) | Citric Acid Solution boils 26°C higher |
| Flash Point ⚠️ | N/A | N/A | Data not available for direct comparison |
| Density | 1.90 g/cm³ | 1.665 g/cm³ | Oxalic Acid is denser |
| Water Solubility | 9.5 g/100 mL (20°C) | 59.2 g/100 mL (20 °C) | |
| pH | 1.3 (0.1 M solution) | 2.2 (1% solution) | Oxalic Acid is more acidic |
| Molecular Weight | 90.03 g/mol | 192.12 g/mol | Citric Acid Solution is heavier molecule |
| Melting Point | 189.5°C | 153 °C | Oxalic Acid melts 36.5°C higher |
| Vapor Pressure | N/A | N/A | Data not available for direct comparison |
| Auto-ignition Temp ⚠️ | N/A | N/A | Data not available for direct comparison |
| Vapor Density | N/A | N/A | Data not available for direct comparison |
| Appearance | White crystalline solid | Clear, colorless liquid | |
| Odor | Odorless | Odorless | Similar odor |
Data sourced from PubChem (NIH), OSHA Technical Guidelines, and Alliance Chemical laboratory analysis. Last verified April 2026.
Applications & Use Cases
Oxalic Acid Best For:
- Cleaning agent
- Rust removal
- Bleaching agent
- Mordant in dyeing
- Analytical reagent
Citric Acid Solution Best For:
- pH adjustment in manufacturing
- Metal descaling
- Titration
- Corrosion inhibitor
- Sanitizer
Choosing Between Them
The right choice depends on your specific application, required purity, and handling capabilities. Contact our team for guidance on which chemical best fits your needs.
Safety & Handling Comparison
Storage Requirements
Always store in original containers in a cool, well-ventilated area per NFPA 30 guidelines. Refer to each product's SDS for specific storage temperature ranges and incompatible materials.
PPE Requirements
At minimum: chemical-resistant gloves, safety goggles, and adequate ventilation per OSHA 29 CFR 1910.132-138. Check each SDS below for chemical-specific PPE requirements.
Fire Hazard
Consult SDS for specific fire hazard information.
Safety Data Sheets (SDS)
Which Chemical Should You Choose?
Decision Snapshot
| Decision Factor | Better Fit | Why |
|---|---|---|
| Evaporation Profile | Oxalic Acid | Lower boiling point supports faster flash-off. |
| Fire Safety Margin | Check SDS | Flash-point data is incomplete for one or both products. |
| Application Breadth | Citric Acid Solution | Compares distinct listed use cases to avoid generic recommendations. |
| Purity Flexibility | Standard grades | Based on availability of 99%+ concentration options in current product metadata. |
Choose Oxalic Acid if:
- You specifically need support for cleaning agent applications.
- You specifically need support for bleaching agent applications.
- You want a faster-evaporating solvent for quick-dry production steps.
Choose Citric Acid Solution if:
- You specifically need support for ph adjustment in manufacturing applications.
- You specifically need support for metal descaling applications.
- You need a higher-boiling solvent that stays in-process longer.
Commercial & Fulfillment Snapshot
Built for purchasing teams that need predictable dispatch, compliant documentation, and freight flexibility from parcel to full truckload.
| Procurement Advantage | Oxalic Acid | Citric Acid Solution |
|---|---|---|
| Grade & Concentration Coverage | multiple concentration options by application with industrial/lab procurement support. | 50% to 25% with industrial/lab procurement support. |
| Packaging Depth | 1 Pack (2 lbs.) to 40 Bag (2200 lbs.) for parcel, pallet, and truckload planning. | small packs through bulk freight quantities for parcel, pallet, and truckload planning. |
| Dispatch SLA | Order by 1 PM CT (Mon-Thu) or noon CT Friday for same-business-day outbound from Taylor, TX. | Order by 1 PM CT (Mon-Thu) or noon CT Friday for same-business-day outbound from Taylor, TX. |
| Freight Optionality | UPS Ground for small packs plus LTL/FTL lanes through ABF, SEFL, Saia, XPO, and partner carriers. | UPS Ground for small packs plus LTL/FTL lanes through ABF, SEFL, Saia, XPO, and partner carriers. |
| Compliance Readiness | SDS ready now; COA/TDS support available pre-PO and post-order. | SDS ready now; COA/TDS support available pre-PO and post-order. |
| Bulk Procurement CTA | Request bulk quote or call (512) 365-6838. | Request bulk quote or call (512) 365-6838. |
Need Help Deciding? Our technical team can help you choose the right chemical for your specific application. Email sales@alliancechemical.com for expert guidance.
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Alliance Chemical supplies both Oxalic Acid and Citric Acid Solution in various grades and package sizes.