Basic information
Chinese name food additive phosphoric acid
English name Foodphosphoricacid
Molecular formula H3PO4
Molecular weight 97.995
CASRN 7664-38-2
Fold to edit the physical properties of this paragraph
Pure product is colorless transparent viscous liquid or rhombic crystal, odorless, taste very sour. 85% of the phosphoric acid on the market is colorless transparent or slightly light colored, thick liquid. Melting point 42.35ºC. At a boiling point of 213 ° C (when H2O is lost), pyrophosphoric acid is formed. Heating to 300ºC becomes metaphosphate. The relative density is d181.834. Soluble in water, soluble in ethanol. Its acidity is weaker than strong acids such as sulfuric acid, hydrochloric acid and nitric acid, but stronger than weak acids such as acetic acid and boric acid. It can stimulate the skin to become inflamed and destroy tissue. Concentrated phosphoric acid is corrosive when heated in porcelain. It is hygroscopic.
Collapsible edit the main purpose of this paragraph
1, sour agent and yeast nutrition
2, seasoning, canned, refreshing drinks sour agent
3, brewing yeast nutrition source, to prevent the reproduction of miscellaneous bacteria
Fold edit this paragraph quality standard
Implementation standard :GB3149-2004
Collapsible edit this paragraph project specification
Chroma Hezen ≤20
Phosphoric acid content ≥85.0%
Arsenic content (AS) ≤0.00005%
Fluorine content (measured as F) ≤0.001%
Heavy metal content (as PB) ≤0.0005%
Content of easy oxide (calculated as H3PO3) ≤0.012%
Toxic and protective phosphoric acid vapor can cause nasal mucosa atrophy. It has a very strong corrosion effect on the skin and can cause skin inflammatory diseases. It can cause systemic intoxication.
The maximum allowable concentration in the air is 1mg/m3.
Production personnel should wear protective equipment when working, such as overalls, rubber gloves, rubber or plastic aprons, and rubber boots. Pay attention to the protection of respiratory organs and skin, if accidentally splashed on the skin, should immediately rinse with plenty of water, after washing the phosphoric acid, generally use red mercury solution or gentian purple solution to apply to the affected area, serious cases should be immediately sent to the hospital for diagnosis and treatment.
Fold edit this section packaging storage
The phosphoric acid is packed in polyethylene plastic drums, and the mouth of the drums must be tightly closed with an inner cover and an outer cover. The net weight of each barrel is 25, 30, 35kg, 330kg. When the user has special requirements, supply and demand negotiation. The packaging should be clearly marked, indicating: product name, specifications, net weight, "corrosive goods" mark.
It is a second class inorganic acid corrosion article, danger code number :GB8.1 Class 81501. UN NO.1805; IMDG CODE8024 pages, Class 8.1. Should be stored in a cool, ventilated warehouse. High concentration of phosphoric acid in cold winter areas should pay attention to heat preservation, prevent icing, prevent container rupture and leakage. Do not store and transport with alkali, toxic substances and other corrosive substances. Be protected from rain and sun during transportation. When loading and unloading, please handle gently, strictly prohibit violent impact, to prevent the packaging container from breaking.
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