偏磷酸

Metaphosphoric acid is used as a dehydrating agent. Its derivative, sodium hexametaphosphate is used as a sequestrant and a food additive. It is also used as phosphorylating agent, analytical reagent and in dental cements.

Hygroscopic. Moisture sensitive. Incompatible with strong bases, most metals and oxidizing agents.

MFCD00011351

253-433-4

HPO₃

79.98

2.2

Hygroscopic. Ambient temperatures.

Crystalline

Decomposes in water. Soluble in alcohol.

14,7345

III

34
Causes burns.

Maximum level of impurities: Stabilizer (NaPO₃) 57.0-63.0%, Cl 0.001%, NO₃ 0.001%, SO₄ 0.005%, As 1ppm, Heavy Metals (as Pb) 0.005%, Fe 0.005%, Substances reducing permanganate (as H₃PO₃) 0.02%

8

26-36/37/39-45-60
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste

 

是

  

H314-H318-H335
Causes severe skin burns and eye damage.Causes serious eye damage.May cause respiratory irritation.

P260h-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.