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citric acid anhydrate
Calcium chloride anhydrate 94% granular
Appearance:white granular,
Assay:94.0% min,
Alkali metals and chloride:3% max,
Insoluble matter in water:0.25% max,
Alkality(as Ca(OH)2:0.30%max,
pH :9-10
Packing:25kg plastic woven bag,25mt/20'FCL
| TEST | SPECIFICATION |
1 |
Appearance | white granular |
2 |
Assay |
≥94% |
3 |
Alkali metals and chloride |
≤3% |
4 |
Insoluble matter in water |
≤0.25% |
5 |
Alkality(as Ca(OH)2) |
≤0.30% |
6 |
PH |
9-10 |
Identification (1) Take a small amount of this product with the fire burning, that is, slow decomposition, but does not occur caramel smell. (2) sample solution with 4.3% sodium hydroxide solution to neutral, plus 5% sulfuric acid solution heated to boiling mercury, plus 1 drop of 0.1m potassium permanganate solution, after shaking subsided purple and white precipitate. (3) take the sample to neutral solution plus 7.5% of excess calcium chloride solution, no change in cold, boiled white granular precipitate is produced. Take this solution, part of the added 4.3% sodium hydroxide solution, insoluble precipitate; part by adding 24% hydrochloric acid, then dissolved. (4) to neutral to take the sample solution plus excess 0.1mol / L silver nitrate solution, which produce a white precipitate. This precipitation in 40% nitric acid or ammonia solution to dissolve. Take this test tube placed in the solution of ammonia in the water bath heated to 60 ~ 70 °C, no significant silver wall mirror.
Not based on toxicological 1. Rat oral LD50 6730mg/kg body weight. 2. GRAS FDA-21CFR 182.1033,182.6033. 3. ADI no requirement (FAO / WHO, 1994). 4. Metabolism of citric acid cycle intermediates involved in the body's normal metabolism.
Use acidity regulator, acidifier, sequestrant, antioxidant synergists, dispersants, perfume.
1. Caution (1) This product sour round, Zi United States, up to the entrance to the strongest sense of taste, but continued after a short taste. With other acids such as tartaric acid, malic acid and so on, to make the product taste full. (2) the release of hydrogen ions through the product, can reduce the pH of the food, there are inhibiting the action of microorganisms, can enhance the bactericidal effect. (3) due to a sequestration of the goods, can be used for oil and food antioxidant synergist and prevent discoloration of fruits and vegetables dishes. (4) and use this product with sugar, sugar can promote transformation when heated, can prevent crystallization of sucrose in food analysis, made of sand, but also easy to make food moisture. (5) This product should not be preservative potassium sorbate, sodium potassium solution, such as benzene, while adding, if necessary, were successively added to prevent the formation of insoluble in water, sorbic acid - acid crystals, affecting food preservative effect. 2. Scope and usage (1) China's "food additives health standards" (GB 2920-1996) states: It can be used in various types of food in the amount required in production use. (2) the actual use of reference A. for a variety of soft drinks and fruit juices, the amount of acid according to the amount of raw materials, concentration ratio, the acidity of the different products to control, generally: soft drinks 1.2 ~ 1.5g/kg; juice concentrate 1 ~ 3g/kg. B. used for jams and jellies, to keep the products, pH value of 2.8 to 3.5 more appropriate. Add the jam, in addition to help improve the flavor of jam and corrosion, it can also promote the invertase. If the well as a need to add potassium sorbate preservative in jams, then the two can not be added. C. canned fruit syrup for sugar, in addition to improving the flavor, there to prevent discoloration, inhibit microbial action. General dosage: peach, 2 ~ 3g/kg; orange slice, 1 ~ 3g/kg; pears, 1g/kg; lychee, 1.5g/kg. Sugar should be now with the existing. D. for canned vegetables, canned quality of flavor and maintain favorable. In fresh mushrooms, bamboo shoots and other pre-cooked water solution or canned broth to add about 0.5 ~ 0.7g/kg. E. for Hard Candy, the dosage of 4 ~ 14g/kg; for fruity popsicles, ice cream, with about 0.5 ~ 0.65g/klg. F. grain-based material used in infant foods, dry basis by the amount of 25g/kg.
citric acid anhydrate