Citric Acid Anhydrous & Monohydrate - Industrial Grade for Descaling, Metal Cleaning & Chelating

Product   Name

Citric   Acid

CAS   No.

77-92-9   (Anhydrous) / 5949-29-1 (Monohydrate)

Molecular   Formula

C₆H₈O₇ (Anhydrous) / C₆H₈O₇·H₂O (Monohydrate)

Molecular   Weight

192.12   (Anhydrous) / 210.14 (Monohydrate)

EINECS   No.

201-069-1

Appearance

White   crystalline powder, colorless crystals or granules

Main   Types

Anhydrous: No crystal water,   white powder, highly hygroscopic. Suitable for moisture-sensitive   applications (dry powder beverages, solid pharmaceuticals).   Monohydrate: One crystal water, colorless crystals or white powder,   slightly efflorescent in dry air. Most common grade for food, beverages,   detergents.   Food Grade: Complies with GB 1886.235, FCC, E330; purity ≥99.5%;   strict heavy metal limits.   Pharmaceutical Grade: Complies with USP, BP, EP; used as excipient,   anticoagulant, effervescent agent.   Industrial Grade: Purity ≥99.0%; used in detergents, water treatment,   chemical synthesis.

Key   Parameters

Assay   (anhydrous basis) : Food/Pharma 99.5%-100.5%; Industrial ≥99.0%   Moisture: Anhydrous ≤0.5%-1.0%; Monohydrate 7.5%-9.0%   Sulfates: ≤0.02%   Oxalates: ≤0.01%   Heavy Metals (as Pb) : Food ≤5 mg/kg; Industrial ≤10 mg/kg   Arsenic: ≤1 mg/kg   Chlorides: ≤0.005%   Iron: ≤5 mg/kg   Calcium Salts: ≤0.02%   Readily Carbonizable Substances: Passes test   Sulfated Ash: ≤0.05%

Physical   Properties

Colorless   translucent crystals or white crystalline powder, odorless, strongly sour   taste; density 1.542 g/cm³; melting point 153-159°C (anhydrous decomposes);   soluble in water (approx. 59g/100mL at 20°C), solution acidic; soluble in   ethanol and diethyl ether; monohydrate efflorescent in dry air; anhydrous   highly hygroscopic.

Features

Naturally   occurring in citrus fruits, high safety profile; pure, refreshing sour taste;   strong chelating ability with metal ions; excellent pH buffering capacity;   biodegradable, environmentally friendly.

Main   Applications

Food   & Beverage: Acidity regulator, flavoring agent, chelating agent,   antioxidant, preservative, coagulant, buffer. Used in soft drinks, juices,   jams, candies, wine, dairy, edible oils, frozen foods, baking.   Pharmaceuticals: Effervescent agent (vitamin C tablets, cold   medicine); anticoagulant (blood collection tubes, dialysis fluid); syrup pH   regulator; oral rehydration salts; pharmaceutical excipient.   Detergent Industry: Phosphate substitute as chelator and builder for   laundry powder, liquid detergents, dishwashing liquids, toilet cleaners;   removes rust, scale, urine stains.   Cosmetics: pH regulator, antioxidant (stabilizes vitamin C) in creams,   serums, shampoos.   Water Treatment: Chelator (water softening), scale inhibitor, pH   regulator; used with coagulants.   Chemical Industry: Raw material for citrates (sodium citrate,   potassium citrate, etc.); plasticizer esters; metal cleaning agents;   non-phosphate detergent builders; concrete retarder; textile assistants;   boiler descaler.   Others: Agriculture (carbon source for fermentation), laboratory   buffer solutions, electronics cleaning.

Packaging

25kg   woven bags (PE liner), 25kg paper bags, 25kg fiber drums; jumbo bags (1000kg)   and small packages (1kg, 5kg, 10kg) available upon request. Food-grade   packaging meets food safety standards; pharmaceutical grade uses foil bags or   pharma-grade containers.

Storage   Conditions

Store   in cool, dry, well-ventilated area, away from direct sunlight; keep sealed,   protect from moisture (anhydrous especially); keep away from alkalis,   oxidants, metal powders.

Shipping   Requirements

Non-hazardous   cargo; protect from moisture, sunlight, and rain; handle with care; avoid   mixing with toxic, corrosive materials.

Quality   Standards

Food   Grade: GB 1886.235-2016, FCC, E330; Pharma Grade: USP, BP, EP; Industrial   Grade: GB/T 8269-2020. ISO, Kosher, Halal certifications available.

Minimum   Order Quantity

Standard   20-25 tons (1×20'FCL); trial order 5-10 tons negotiable.

Delivery   Time

Standard   products: 7-15 working days; Pharma/Custom: 15-25 working days.

Payment   Terms

T/T   (30% deposit, 70% against B/L copy), L/C at sight; FOB/CFR/CIF supported.

HS   Code

29181400   (Citric acid - both anhydrous and monohydrate fall under this code)