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Dimethyl Sulfoxide

Product Name	DIMETHYL SULFOXIDE (DMSO)		Manufacture Date		*2010-09-25*
CAS. No.	67 -68- 5		Inspection Date		*2010-09-25*
MOLECULAR FORMULA	(CH3)2SO		Report No.		*100925*
H.S.	2930909090		Packing		In 230kg drums
Standard & Result
Item		Standard Standard
APPEARANCE		CLEAR AND TRANSPARENT CLEAR AND TRANSPARENT
CONTENT BY DMSO %≥		99.8min 99.91
FREEZING POINT ℃ ≥		18.10 min 18.2
ACID VALUE mgKOH/g		0.03max 0.01
TRANSMITTANCE（400n m）		96 min 98
REFRACTIVE INDEX 20℃		1.4775-1.4790 1.4780
Water content		0.1max 0.08
Conclusion
Auditor		Re-inspector		Inspector