項(xiàng)目

Item

工業(yè)級 

Industrial Grade

食品級 

Food Grade

總磷酸鹽（以P₂O₅ 計(jì)）         %

Total phosphate (as P₂O₅)

≥68

≥68

非活性磷酸鹽(以P₂O₅ 計(jì))          %

Inactive phosphate (as P₂O₅)

≤7.5

≤7.5

鐵（以Fe計(jì)）    %

Ferrum (as Fe)

≤0.05

≤0.05

Ph值 

Ph value

5.8 -7.3

5.8-6.5

重金屬（以Pb計(jì)） % MAX

Heavy metal (as Pb)

——

0.001

砷（以As計(jì)）    %

Arsenic (as As)

——

≤0.0003

氟化物（以F計(jì)） % MAX

Fluoride (as F)

——

≤0.003

水不溶物         %

Water insoluble

≤0.05

≤0.05

聚合度 

Degree of polymerization

10-22

10-22

外觀 

Appearance

白色粉狀 

White power 

白色粉末 

White power