Acetonitrile Specification Comparison

Sigma-Aldrich Acetonitrile Specifications Comparison
	CHROMASOLV LC-MS	CHROMASOLV Plus	CHROMASOLV Gradient	Biotech	Anhydrous	Spectro- photometric	ACS	ReagentPlus
Purity	≥99.9%	≥99.9%	≥99.9%	99.93%	99.8%	≥99.5%	≥99.5%	99%
UV Absorption
λ: 190 nm				≤1.00
λ: 193 nm						≤1.00
λ: 195 nm	≤0.097	≤0.10	≤0.13
λ: 200 nm	≤0.022	≤0.02	≤0.03
λ: 210 nm				≤0.03		≤0.30
λ: 220 nm				≤0.01		≤0.10
λ: 228 nm		≤0.005	≤0.004
λ: 230 nm	≤0.0044
λ: 235 nm				≤0.005		≤0.02
λ: 250 nm						≤0.01
λ: 400 nm				≤0.005		≤0.01
Gradient analysis
210 nm	≤1 mAU	≤1 mAU	≤3 mAU
254 nm	≤0.2 mAU	≤0.2 mAU	≤0.5 mAU
Total Impurities
Water	≤0.01%	≤0.01%	≤0.02%	≤0.001%	≤0.001%	≤0.03%	≤0.3%
					≤0.005% (100mL)
Evaporation Residue	≤0.0002%	≤0.0002%	≤0.0005%	≤0.0002%	≤0.0005%	≤0.0003%	≤0.005%
Halogenated Residue		10 ng/L (as Heptachlor epoxide)
Fluorescence 254 nm	≤0.5 ppb	≤0.5 ppb	≤1.0ppb
Fluorescence 365 nm	≤0.5 ppb	≤0.5 ppb	≤0.5 ppb
LC-MS suitability	passes test
Alkalinity	≤0.0002% (NH3)	≤0.0001% (NH3)	≤0.0002% (NH3)
Titratable acid	≤0.001% free acid (as CH3COOH)	≤0.001% free acid (as CH3COOH)	≤0.001% free acid (as CH3COOH)	<0.008 meq/g			<0.008 meq/g
Titratable base				<0.0006 meq/g			<0.0006 meq/g
Silver	0.1 ppm
Aluminum	0.5 ppm
Barium	0.1 ppm
Calcium	0.1 ppm
Cadmium	0.05 ppm
Cobalt	0.02 ppm
Chromium	0.02 ppm
Copper	0.01 ppm
Iron	0.1 ppm
Potassium	0.1 ppm
Magnesium	0.1 ppm
Manganese	0.01 ppm
Sodium	0.1 ppm
Nickel	0.02 ppm
Lead	0.1 ppm
Tin	0.1 ppm
Zinc	0.1 ppm
Packaging Options
	CHROMASOLV LC-MS	CHROMASOLV Plus	CHROMASOLV Gradient	Biotech	Anhydrous	Spectro- photometric	ACS	ReagentPlus
Glass Bottle	34967	34998	34851			154601	360457	110086
PVC Coated Bottle		675415	439134				437557
Sure/Seal™				494445	271004
VerSA-Flow™			439134
NOWPAK™		34998	439134
Pure-Pac™		34998	34851	494445	271004
Carbon Steel							360457
Drum			439134				360457

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CHROMASOLV® Mobile Phase Blends for HPLC & LC-MS Applications