Citric Acid Anhydrous CAS 77-92-9 Information
| CAS |
77-92-9 |
| Molecular formula |
C6H8O7 |
| Molecular weight |
192.12 |
| EIENCS |
201-069-1 |
| Form |
grit |
| Melting point |
153-159 °C (lit.) |
| boling point |
248.08°C (rough estimate) |
| Density |
1.67 g/cm3 at 20 °C |
| Solubility |
Citric acid also dissolves in absolute (anhydrous) ethanol (76 parts of citric acid per 100 parts of ethanol) at 15 °C. |
| PKA |
3.14(at 20℃) |
| Color |
White |
| Storage temp |
2-8°C |
What is Citric Acid Anhydrous CAS 77-92-9?
Anhydrous citric acid (CAS 77-92-9), as a core organic acid in multiple fields, is widely used in food (acidulant/preservative), medicine (pH stabilizer), industry (metal cleaning/synthetic raw material) and environmental protection due to its acid regulation, chelating and antioxidant properties. Safety regulations must be strictly followed to avoid corrosive risks, and ensure cool and sealed storage to maintain stability.
Citric Acid Anhydrous CAS 77-92-9 Use
1.Food and beverage industry
Functions: Acid regulator, preservative, antioxidant.
Application example:
Balance the taste in beverages and fruit juices (addition amount: 0.1% - 0.4%).
Inhibit the crystallization of sucrose (in candies and jams) and prevent sanding.
When combined with baking soda in pasta, it reduces alkalinity and promotes lightness.
2. Medicine and Cosmetics
Medicine
Drug solvents and buffers, adjusting pH to enhance stability.
Cosmetics
pH regulators (for skin care products and shampoos), antioxidant and extend shelf life.
3. Industry and Chemical Engineering
Cleaning agent: Remove oxides (such as rust) from the metal surface.
Chemical raw materials
Synthetic citrate, plasticizer, detergent.
Textile dyeing auxiliaries, improving fiber permeability.
Environmental protection: Chelating heavy metal ions (such as lead and cadmium) in wastewater treatment.
Citric Acid Anhydrous CAS 77-92-9 safety
Danger:
Corrosiveness: Corrosive to carbon steel, skin and eyes (rinse immediately after contact).
Inhalation risk: The powder may irritate the respiratory tract. Protective equipment should be used during operation.
Storage specifications:
Store in a sealed container in a cool and dry place, away from fire sources, oxidants and damp environments.
Packaging: Woven bags lined with plastic bags or kraft paper bags (25kg per bag), shelf life ≤2 years.
