1-Quart plastic bottle of Alliance Chemical Citric Acid 50% Solution with a ribbed neck, white screw cap, and product label.
Two 1-quart plastic bottles of Alliance Chemical Citric Acid 50% Solution with white screw caps and product labels.
Alliance Chemical One-gallon industrial citric acid solution (50% concentration) in HDPE jug hazard warning symbol
Four 1-gallon HDPE jugs of Alliance Chemical Citric Acid 50% Solution with white caps and product labels
One 5-gallon HDPE pail of Alliance Chemical Citric Acid 50% Solution with a white screw cap, integrated handle, and produc...
One 15-gallon HDPE pail of Alliance Chemical Citric Acid 50% Solution with handle and white screw cap.
One 55-gallon HDPE drum of Alliance Chemical Citric Acid 50% Solution with blue lid and safety label.
Alliance Chemical company logo
275-gallon IBC tote of 50% citric acid solution , integrated spigot, hazard warning label and Alliance Chemical branding
32 cardboard boxes of Alliance Chemical Citric Acid 50% Solution on a wooden pallet with red logo.
15 white 5-gallon HDPE pails of 50% citric acid solution stacked on pallet, Alliance Chemical branded containers
Four 1-quart HDPE jugs of Alliance Chemical Citric Acid 50% Solution with white screw caps and product labels.
Eight Alliance Chemical Citric Acid 50% Solution 1-quart HDPE bottles with white ribbed caps and product labels
Alliance Chemical Two 1-gallon HDPE jugs of 50% citric acid solution corrosive warning symbols, and white ribbed caps
55-gallon HDPE drums of Citric Acid 50% solution (4-pack) hazard warnings, and caps, distributed by Alliance Chemical
One 330-gallon tote of Alliance Chemical Citric Acid 50% Solution with a metal cage, spigot, and product label.

Citric Acid 50% Solution

Category : Acids

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Citric Acid 50% Solution

$17.00
1-Quart plastic bottle of Alliance Chemical Citric Acid 50% Solution with a ribbed neck, white screw cap, and product label.
Two 1-quart plastic bottles of Alliance Chemical Citric Acid 50% Solution with white screw caps and product labels.
Alliance Chemical One-gallon industrial citric acid solution (50% concentration) in HDPE jug hazard warning symbol
Four 1-gallon HDPE jugs of Alliance Chemical Citric Acid 50% Solution with white caps and product labels
One 5-gallon HDPE pail of Alliance Chemical Citric Acid 50% Solution with a white screw cap, integrated handle, and produc...
One 15-gallon HDPE pail of Alliance Chemical Citric Acid 50% Solution with handle and white screw cap.
One 55-gallon HDPE drum of Alliance Chemical Citric Acid 50% Solution with blue lid and safety label.
Alliance Chemical company logo
275-gallon IBC tote of 50% citric acid solution , integrated spigot, hazard warning label and Alliance Chemical branding
32 cardboard boxes of Alliance Chemical Citric Acid 50% Solution on a wooden pallet with red logo.
15 white 5-gallon HDPE pails of 50% citric acid solution stacked on pallet, Alliance Chemical branded containers
Four 1-quart HDPE jugs of Alliance Chemical Citric Acid 50% Solution with white screw caps and product labels.
Eight Alliance Chemical Citric Acid 50% Solution 1-quart HDPE bottles with white ribbed caps and product labels
Alliance Chemical Two 1-gallon HDPE jugs of 50% citric acid solution corrosive warning symbols, and white ribbed caps
55-gallon HDPE drums of Citric Acid 50% solution (4-pack) hazard warnings, and caps, distributed by Alliance Chemical
One 330-gallon tote of Alliance Chemical Citric Acid 50% Solution with a metal cage, spigot, and product label.
  • Description
  • Product Documents
  • Chemical Profile

Product Overview

Citric Acid 50% Solution is a high-purity, clear liquid specifically formulated for industrial applications requiring precise acidity and chelating capabilities. As a concentrated organic acid with the chemical formula C₆H₈O₇, this solution serves as a versatile alternative to mineral acids. Also known in the industry as Sour Salt or E330, this Reagent Grade fluid allows for accurate pH adjustment and formulation stabilization without the solubility issues often associated with powdered forms.

The 50% w/w concentration provides an optimal balance between active content and ease of handling. It is widely used for stainless steel passivation, removing iron oxides, and sequestering trace metals in water treatment and chemical processing. The product is manufactured to minimize impurities such as heavy metals and chlorides, aligning with USP-NF Monograph and FCC standards. With a typical specific gravity of 1.058–1.06, plant operators can easily calculate volume requirements for bath dosing and process integration.

Key Properties

  • Appearance: Clear, colorless liquid
  • Grade: Reagent Grade (Aligns with USP-NF/FCC)
  • Chemical Formula: C₆H₈O₇
  • Specific Gravity: 1.06 at 25°C (typical)
  • pH: 2–3 (1:1 dilution)
  • Heavy Metals (as Pb): ≤0.5 mg/kg (max)
  • Iron (Fe): ≤0.5 mg/kg (max)
  • Residue After Ignition: ≤0.2% max
  • Chloride (Cl): ≤50 mg/kg (max)
  • Shelf Life: 24 months with proper storage

Common Applications

  • Metal Surface Treatment: Used extensively for the passivation of stainless steel, removing free iron from the surface to prevent corrosion without using nitric acid.
  • Industrial Cleaning: Acts as an effective descaler for boilers, evaporators, and heat exchangers by chelating calcium and magnesium deposits.
  • pH Control: Provides reliable acidity adjustment in water treatment, textile processing, and chemical manufacturing.
  • Chelating Agent: Sequesters trace metals in formulations to improve stability and prevent catalytic degradation.
  • Laboratory Reagent: Functions as a buffering agent in biochemical assays and chromatographic procedures.

Safety Precautions

Citric Acid 50% Solution is corrosive to certain metals and can cause irritation to eyes and skin. Personnel should utilize appropriate Personal Protective Equipment (PPE), including chemical-resistant gloves, splash goggles, and protective clothing. Ensure the workspace is well-ventilated to minimize vapor accumulation.

Store in High-Density Polyethylene (HDPE) or glass containers; avoid carbon steel. Keep away from strong oxidizing agents and bases. In the event of a spill, contain the material and neutralize carefully before disposal according to local regulations. For transport purposes, this product is classified as UN 1760, Corrosive liquid, n.o.s., Class 8, Packing Group II.

Related Products

Property Value
Molecular Weight 192.12 g/mol
Formula C6H8O7
Assay 50%
Flash Point 230
Solubility Complete water miscibility
Appearance Transparent pale liquid, slightly viscous
Melting Point 153 °C
Boiling Point 175 °C

Frequently Asked Questions About Citric Acid 50% Solution

What is Citric Acid 50% Solution and what is its chemical formula?
Citric Acid 50% Solution is a chemical compound with the molecular formula C6H8O7, registered under CAS Number 77-92-9 by the Chemical Abstracts Service (PubChem), with a molecular weight of 192.12 g/mol. Alliance Chemical supplies Citric Acid 50% Solution for laboratory, industrial, and commercial applications.
What are the physical properties of Citric Acid 50% Solution?
According to the NIOSH Pocket Guide to Chemical Hazards, Citric Acid 50% Solution has a transparent pale liquid, slightly viscous appearance. It has a melting point of 153°C, a boiling point of 175°C, a flash point of 230. Solubility: Complete water miscibility.
What grade and purity of Citric Acid 50% Solution does Alliance Chemical offer?
Alliance Chemical offers Citric Acid 50% Solution with a purity assay of 50%. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Citric Acid 50% Solution?
Citric Acid 50% Solution has applications in laboratory research, manufacturing, and industrial processing.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Citric Acid 50% Solution?
OSHA-mandated PPE per 29 CFR 1910.132-138:Chemical-resistant gloves (20+ mil neoprene or PVC), full face shield over safety goggles (ANSI Z87.1), acid-resistant apron or chemical suit, closed-toe chemical-resistant footwear. Respiratory protection (organic vapor cartridge) required in areas exceeding PEL/TLV per 29 CFR 1910.134. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Citric Acid 50% Solution?
Store perOSHA 29 CFR 1910.106: Approved flammable storage cabinet, maximum 60 gallons per cabinet, grounding/bonding required. Temperature range:15-25°C. Segregate from:bases, reactive metals, organic materials. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Citric Acid 50% Solution?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 100 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Carefully neutralize with sodium bicarbonate (5-10% solution), monitor exothermic reaction. (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Citric Acid 50% Solution?
DOT Classification per 49 CFR 172.101:See SDS Section 14 for specific UN number, Hazard Class8 (Corrosive), Packing GroupII/III. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Citric Acid 50% Solution waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D002 (Corrosive, pH ≤2 or ≥12.5). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Citric Acid 50% Solution?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Citric Acid 50% Solution. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.

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