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2-hydroxy naphthalene-6,8-disulfonic acid potassium salt (g salt)

c.a.s. no.: 118-32-1

chemical formula: c₁₀h₆o₇s₂k₂

molecular weight: 380.48

chemical name:

2-hydroxy naphthalene-6,8-dipotassium disulfonate

appearance	grey-white powder
coupling value	90% min. (refined grade 95% min. available)
r salt	1% max.
free acid (h2so4)	1.5% max.
insoluble	0.1% max.
packing	25 kg woven bag

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