应用
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.

Grade Specifications
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%

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

基本信息

MDL
MFCD00011351

EINECS
253-433-4

分子式
HPO₃

分子量
79.98

密度
2.2

灵敏度
Hygroscopic. Ambient temperatures.

形态
Crystalline

溶解性
Decomposes in water. Soluble in alcohol.

Merck
14,7345

GHS危害和防范说明

GHS符号

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

Precautionary Statements
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.

安全信息

危险等级
8

包装组
III

危险类别
34
Causes burns.

安全等级
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

欧盟危险品标志

TSCA
是