|Sodium oxide as Na2O (%)||15.5~19|
|Sulphate (as SO42-) (%)||≤ 0.5|
|Heavy metals (%)||≤ 0.001|
|Lead (Pb) (%)||≤ 0.0004|
|Fluoride (F) (%)||≤ 0.005 |
|Arsenic (as As) (%)||≤ 0.0003|
|Ph of 10g/l watre solution||11.5~12.5|
|Ignition loss||45 ~ 57|
|Water insoluble (%)||≤0.20|
|Storage||in the shade|
1. The quality improving agent of the work has the functions of improving the complex metal ions of the food, the pH value, and increasing the ionic strength, thereby improving the cohesiveness and water holding capacity of the food. China regulations can be used for cheese, the maximum use is 5g / kg; the maximum use of Western ham, meat, fish, shrimp and crab is 3.0g / kg; the maximum use in cans, juice, beverages and dairy products is 0.5g /kg.
2. Used as softener and detergent in the chemical, textile, printing and dyeing, papermaking, power generation and other industries, boiler anti-scaling agent, soft water agent in paper dyeing, pH-based buffer for producing wax paper adhesive, printing and dyeing Fixing agent, mercerizing enhancer for fabric, anti-brittle agent for line making. The metallurgical industry is used as a chemical degreasing, decontamination, and as an excellent accelerator in photographic developing solutions. Detergent for tooth cleaners and bottlers. A coagulant for rubber latex. Sugar juice purifier. Phosphate plays a role in quality improvement in food processing. For example, in meat products, it maintains the water holding capacity of the meat and enhances the binding force to reduce the loss of nutrients in the meat and preserve the tenderness of the meat. It is also used as an emulsifier, a nutritional supplement, and a quality improver in food processing. It is a raw material for the preparation of edible alkali water, and is also used for the manufacture of sugar and α-starch. It is also used as a detergent for food bottles, cans, and the like.
(a) as a hard water softener trisodium phosphate for boiler water furnace treatment agent.
Note: 1. Trisodium phosphate can work with soluble calcium salt and magnesium salt which are easy to form pot scale in water, and generate insoluble calcium phosphate Ca3(PO4)2, magnesium phosphate Mg3(PO4)2 and other precipitates suspended in water, so that the boiler does not form pot scale.
2. At the same time the excess trisodium phosphate, but also has been the pot scale part into soft and fall off. Therefore, the coal of the boiler is saved, the safety of the boiler is maintained and the service period of the boiler is extended. The reaction formula is as follows: 3CaSO4+2Na3PO4→3Na2SO4+Ca3(PO4)2↓ 3MgSO4+2Na3PO4→3Na2SO4+Mg3(PO4)
(two) as cotton scouring assistant cotton scouring water, water contains hardness, should add an appropriate amount of sodium phosphate as a water softener. It has the advantage of improving the capillary effect of fabric.
Note: 1. After the hard water is softened by trisodium phosphate, the liquid in the bath is burned. It is not consumed by hard water and promotes burning. Cooking and scouring effect on cotton cloth.
2. Trisodium phosphate reacts with calcium and magnesium salts in hard water to form insoluble calcium phosphate and magnesium phosphate salts; These phosphates are not sticky and do not stick to the fabric as the calcium and magnesium salts of soap do. In addition, it also has the function of penetration and emulsification.
3. Under the general water hardness, the dosage of trisodium phosphate is about 0.5 ~ 1 g/l.
(three) as a scaling agent, metal cleaning agent trisodium phosphate dissolved in water has a greasy feeling, can increase the wetting ability of water, has a certain emulsification, is coated to remove the hard surface and metal surface dirt on the excellent scrubbing agent.
Note: 1. The bottles can be washed with 1% trisodium phosphate solution to remove dirt in the laboratory.