Citric acid is a weakorganic acid. It is a natural preservative conservative and is also used to add an acidic, or sour, taste to foods and soft drinks. In biochemistry, the conjugate base of citric acid, citrate, is important as an intermediate in the citric acid cycle, and therefore occurs in the metabolism of virtually all living things.

　　It is Colorless or white crystalline powder and mainly used as an acidulant, flavorant and preservative preservative in foods and beverages. It is also used as an antioxidant, plasticizer and detergent, builder.

　　Used in food, beverage industries as acidulous agent, flavoringUsed in food, beverage industries as acidulous agent, flavoring agent, and preservative, also used in detergent, electric plating, and chemical industries as oxidation inhibitor, plasticizer etc.

　　Citric acid is an organic acid found a variety of fruits and Acidity regulators vegetables, but it is most concentrated in lemons and limes. It is a natural preservative and is also used to add an acidic （sour） taste to foods and soft drinks. In biochemistry, it is important as an intermediate in the citric acid cycle or Krebs cycle （see last paragraph） and therefore occurs in the metabolism of almost all living things. Excess citric acid is readily metabolized and eliminated from the body. Citric acid is an antioxidant. It is also used as an environmentally friendly cleaning agent.

CERTIFICATE OF ANALYSIS

Product Name: Citric acid anhydrous 30-100mesh    

Batch No.: 2AX1512013                        Manu. Date: Dec., 2015

Quantity: 26mt                                Expiry Date: Dec., 2017

Analysis Test	Specification	Result
Description	Colorless Crystals or White Crystalline powders	Pass
Identification	Pass test	Pass
Clarity & Color Solution	Clear in 20% water solution	Pass
Content	99.5～101.0%	99.8%
Sulphate	≤150ppm	＜10ppm
Oxalate	≤100ppm	＜10ppm
Heavy Metals (as Pb)	≤5ppm	＜1ppm
Barium	Pass	Pass
Calcium	≤75ppm	＜10ppm
Iron	≤5ppm	＜1ppm
Chloride	≤50ppm	＜5ppm
Sulphate Ash	≤0.05%	0.02%
Water	≤0.5%	0.1%
Readily Carbonisable Substances	Not darker than the standard	Pass
Lead	≤0.5ppm	＜0.1ppm
As	≤1ppm	＜1ppm
Mercury	≤1ppm	＜1ppm
Aluminium	≤0.2ppm	＜0.2ppm
Bacteria endotoxic	≤0.5IU/mg	＜0.1IU/mg
Organic Volatile Impurities	Pass	Pass
Tridodecylamine	≤0.1ppm	＜0.1ppm
Ultraviolet Absorbance	Pass	Pass
Conclusion	The product is in conformity with BP/USP/FCC/E330

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