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Item

Standard Value

?

Test result

SiO_{2????????????????????????????????} %

39-41

39.28

Na₂O???????????????????? %

≤0.50

0.39

Fe³⁺?????????????????? (ppm)

<50

6

Al³⁺?????????????????? (ppm)

<60

25

Ph (25℃)

?8.5-10

10.35

Viscosity(25℃)???????????? cP

≤30

21.79

Density(25℃)??????????? g/cm³

1.280-1.295

1.283

Size????????????????????? nm

?7-15

11.44