USD $1.00-10.00 / Kilogram
items | standards | ||
description | colorless crystals or white crystalline powders | ||
clarity & clolor of solution | 20% water solution clarifying | ||
assay | 99.5%-100.5% | ||
moisture | 7.5-8.8 | ||
sulphated ash | ≤ 0.05% | ||
light transmittance | ≥97.0% | ||
sulpahte | ≤150ppm | ||
chloride | ≤50ppm | ||
calcium | ≤75ppm | ||
heavy metal | ≤5ppm | ||
iron | ≤5ppm | ||
oxalate | ≤100ppm | ||
readily carbonizable | not darker than standard | ||
aluminium | ≤0.2ppm | ||
arsenic | ≤1ppm | ||
mercury | ≤1ppm | ||
lead | ≤0.5ppm | ||
endotoxin of germ | ≤0.5iu/mg | ||
tridodecylamine | ≤0.1ppm |