Item

Standard Value

Test result

SiO₂                                 %

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