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			| Molecular Formula: | (CH3)2SO4=126.13 |  
			| Properties: | colorless or yellowish transparent liquid, combustible and highly toxicl volatilized at 50℃ under normal pressure; slightly soluble in water, soluble in ethanol and ether; its vapor is highly corrosive to skin, eyes and respiratory system. |  
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						| National Standard |  
						| Item | Best Quality | Qualifier |  
						| Assay | ≥98.5% | ≥98.0% |  
						| Acidity | ≤0.5% | ≤0.8% |  |  
			| Use: | widely used in pharmaceutical, pesticide, dyes, perfumes, rubber and war industries. |  
			| Packing: | in bulk |  
			| Storage & Transportation | handle with care, far away from fire. |  |