Molekula
Citric acid anhydrous
Citric acid anhydrous is a white crystalline powder used as a pH adjuster, chelating agent, and acidulant in food, pharmaceuticals, and industrial applications. It has a CAS number of 77-92-9, molecular formula C6H8O7, and a molecular weight of 192.12 g/mol. Stored at ambient temperatures, it carries a warning signal word due to potential irritation. Molekula supplies citric acid anhydrous from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Citric acid anhydrous is a white crystalline powder used as a pH adjuster, chelating agent, and acidulant in food, pharmaceuticals, and industrial applications. It has a CAS number of 77-92-9, molecular formula C6H8O7, and a molecular weight of 192.12 g/mol. Stored at ambient temperatures, it carries a warning signal word due to potential irritation. Molekula supplies citric acid anhydrous from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless crystals or white crystalline powder |
| Water | ≤0.2% |
| Heavy metals | ≤1ppm |
| Arsenic | ≤1ppm |
| Lead | ≤0.5ppm |
| Identification | Conforms to reference |
| Odour | Odourless |
| Colour | ≥98.00% (50% w/v; 405nm 1cm cell) |
| Sulfate (SO4) | ≤30ppm |
| Assay | ≥99.80% |
| Calcium | ≤10ppm |
| Iron | ≤1ppm |
| Copper | ≤1ppm |
| Magnesium | ≤1ppm |
| Chlorides | ≤5ppm |
| Mercury | ≤1ppm |
| Zinc | ≤1ppm |
| Aluminium | ≤0.2ppm |
| Oxalates | ≤10ppm |
| Barium | ≤1ppm |
| Oxalate (as oxalic acid) | ≤10ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 77-92-9 |
| Molecular Formula | HOC(COOH)(CH2COOH)2 |
| Molecular Weight | 192.12 |
| SMILES | C(C(=O)O)C(CC(=O)O)(C(=O)O)O |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29181400 |
| Tariff Code | 2918140090 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- USH01 May form combustible dust concentrations in air
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P337+313 If eye irritation persists get medical advice/attention
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is citric acid anhydrous used for?
It is commonly used as a pH adjuster, chelating agent, and acidulant in food, pharmaceuticals, and cleaning products.
What is the chemical formula and molecular weight of citric acid anhydrous?
The formula is C6H8O7 and the molecular weight is 192.12 g/mol.
How should citric acid anhydrous be stored?
Store at ambient temperature in a dry, well-ventilated area away from incompatible materials.
What grade of citric acid anhydrous is available?
Available in food grade and technical grade; please specify your application when ordering.
Can Molekula supply citric acid anhydrous in bulk?
Yes, bulk quantities are available—contact our sales team for pricing and availability.
What documentation comes with a purchase of citric acid anhydrous?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.