product name	sodium sulphate
analysis items	standard
	Ⅰclass		Ⅱclass		Ⅲclass
	excellent	firstclass	fristclass	eligible	fristclass	eligible
sodium sulphate	99.3	99	98	97	95	92
water insoluble	0.05	0.05	0.1	2	—	—
mg	0.1	0.15	0.3	0.4	0.6	—
cl	0.12	0.35	0.6	0.9	2	—
fe	0.002	0.002	0.01	0.04	—	—
moisture	0.1	0.2	0.5	1	1.5
whiteness	85	82	80	80	80	80