... blue, red, rose, yellow, orang, purple.Main Composition: Sodium sulphate anhydrousSpecification: According to the quality requirement of QB 1806 ... ITEMSPECIFICATIONColorpurpleAppearanceFlow freely, speckles/granulesOdorNo peculiar smellApparent gravity,0.7-1.1g/mlTime of slaking≤5.0 minParticle diameter 0 ... .45-1.25mm≥80%PH value (1% aqueous solution,)8.0-12.0Soda ...