Appearance: White to yellowish paste
Active matter% : 70±2
Sodium sulfate% (relative to 100% active matter ): 1.5 max.
Unsulfated matter, %( relative to 100% active matter): 2.0 max.
pH value (1% a. m.): 7.0~9.0
Color, Hazen (5% a. m.): 20 max.