FPC-640M

Water-based Antirust agent
Quality Parameters and Test Method

Item

Quality Parameters

Test Method

Original liquid

（15~35）℃
Appearance

Colorless or yellow transparent liquid

Eyeballing

pH Value

9~10

Universal pH indicator paper

Dilute solution（3%，w/w）

（55±2℃）, h Corrosion resistance, All dipping

HT300- Cast iron

24

  GB/T6144 5.6

（35±2℃）, h Rust resistance

HT300 Cast iron

Single

24

GB/T 6144 5.7