Content as H3PO4: 85% min;
Arsenic: <0.00005% max;
Heavy metals(as lead): <0.0005%max;
Fluride (as F): <0.001%;
Colority: 20 max;
Reduction Matter as H3PO3: <0.012%;
Use as clarifying agent or acidulants for food and drink, yeast nutrients, also use in food grade phosphate production and use as fertilizer in the soil around a granule.
The daily chemical industry is used as an auxiliary agent for detergent production, used for impregnating the match stem, making the match safer to use.Metallurgical industry for the production of phosphoric acid refractory, can improve the life of the furnace.The food industry USES it as an acidic flavoring agent.The coating industry USES it as a metal anticorrosive paint.
Physical and chemical properties: the product is colorless transparent viscous liquid or rhombic crystal, odorless, very sour taste.85% of commercially available phosphoric acid is colorless transparent or slightly
Light colored, thick liquid.The melting temperature of 42.35 ºC.At the boiling point of 213 ° c (loss of 1/2 h2o), pyrophosphoric acid is formed.Heat to 300ºC
Phosphoric acid.Relative density 1.834(18ºC).Soluble in water, soluble in ethanol.Its acidity is weaker than sulfuric acid, hydrochloric acid and nitric acid, but
Compared with acetic acid, boric acid and other weak acid strong.Can stimulate the skin to cause inflammation, destroy the body tissue.The concentrated phosphoric acid has erosive effect and hygroscopicity when heated in the porcelain.
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