Specification Comparison

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Sigma-Aldrich Dimethyl sulfoxide Specifications Comparison
	CHROMASOLV Plus	Biotech	Anhydrous	ACS Spectro- photometric	ACS	ReagentPlus
Purity	≥99.7%	99.98%	≥99.9%	≥99.9%	≥99.9%	≥99.6%
UV Absorption
λ: 270 nm	≤0.70	≤1.00		≤0.40
λ: 280 nm	≤0.30	≤0.30
λ: 290 nm				≤0.18
λ: 295 nm		≤0.10
λ: 300 nm	≤0.10
λ: 310 nm				≤0.06
λ: 330 nm				≤0.02
λ: 350 nm	≤0.01	≤0.01		≤0.01
λ: 400 nm		≤0.01		≤0.01
Total Impurities
Water	≤0.2%	≤0.005%	≤0.005%	≤0.1%	≤0.1%	≤0.1%
Evaporation Residue	≤0.002%	≤0.0005%	≤0.0005%	≤0.01%	≤0.01%
Titratable acid				≤0.001 meq/g	≤0.001 meq/g
Packaging Options
	CHROMASOLV Plus	Biotech	Anhydrous	ACS Spectro- photometric	ACS	ReagentPlus
Glass Bottle	34869			154938	472301	471267
Sure/Seal^™		494429	276855
VerSA-Flow^™					472301	471267
NOWPAK^™	34869
Pure-Pac^™		494429	276855
Drum	34869				472301

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