Specification: Industrial Grade (GB2946-92) Inspection itemUnitFirst GradeRegular GradeAmmonium chloride(as NH4Cl)% Min99.599.0Moisture% Max0.71.00Iron% Max0.0010.003Burnt Loss% Max0.400.40Heavy Metal(As Pb)% Max0.00050.001Sulfate% Max0.02PH #118alue C200g/l Solution at 25°C)4.0-5.84.0-5.8Specification: Agricultural Grade with K2O Inspection itemUnitDry GradeWet GradeGranularNitrogen% Max22.5%22.5%22.5%