Chromatography

Main substance min. 99.8%
Water max.0.05%
Acidity (μEq/g) max.0.0005
Residue after evaporation max.0.0005%
UV - absorption:
240 nm max. 0.30
250 nm max. 0.07
270 nm max. 0.009

Panreac 363995

Minimum assay (Acidim.) calc. a.d.s.: 99.0%
Identity: IR passes test
 Maximum limit of impurities
Water (H2O): 2 %
UV Spectrum (1cm cell; Ref.: water):
Transmittance at 200 nm: ≥70%
Transmittance at 220 nm: ≥90%
Transmittance at 250 nm: ≥98%

Content (G.C.): 99.9%
Density 20/4: 0.808-0.810
Maximum impurity limit
APHA color: 10
Acidity: 0.0002 meq/g
Alkalinity: 0.0002 meq/g
Non-volatile matter: 0.0003 %
Water (H2O): 0.03%
Suitability for IR spectrometry:: passes the test
UV spectrum (1cm cell; Ref.: water):
Transmittance at 207 (cutoff) nm: ≥10%
Transmittance at 210 nm: ≥25%
Transmittance at 220 nm: ≥50%
Transmittance at 230 nm: ≥75%
Transmittance at 240 nm: ≥85%
Transmittance at 250 nm: ≥94%
Transmittance at 270-450 nm: ≥98%
Data of interest for HPLC:
P' + 0.25 E: 8.3
Rohrschneider Polarity: 3.9
Eluotropic value E° (Al2O3): 0.7
Sol. H2O in solution. at 20°C: 20.1
For critical tasks, purge with nitrogen.
Microfiltered product (0.2 μm) and bottled under nitrogen atmosphere.

Panreac 361090

Minimum assay (G.C.): 99.9%
Density 20/4: 0.784-0.786
Maximum limit of impurities
APHA colour: 10
Acidity: 0.0001 meq/g
Alkalinity: 0.0001 meq/g
Non-volatile matter: 0.0003 %
Water (H2O): 0.05 %
UV Spectrum (1cm cell; Ref.: water):
Transmittance at 207 (Cut off) nm: ≥10%
Transmittance at 217 nm: ≥50%
Transmittance at 232 nm: ≥80%
Transmittance at 242 nm: ≥90%
Transmittance at 250 nm: ≥95%
Transmittance at 260-400 nm: ≥98%
Data of interest in HPLC:
Rohrschneider Polarity: 3.9
Eluotropic value E° (Al2O3): 0.82
Sol. H2O in solv. at 20°C: miscible
For critical jobs, purge with nitrogen.
Microfiltered product (0.2 μm) and bottled under nitrogen atmosphere.

Merck 1.00998

Applichem A3928 

Panreac 361007

Main substance (G.C.): 99.9%
Density 20/4: 0.787-0.791
Maximum impurity limit
APHA color: 10
Acidity: 0.0002 meq/g
Alkalinity: 0.0002 meq/g
Substances insoluble in H2O: Passes the test
Non-volatile substances: 0.0003 %
Reducing agent to KMnO4 (as O): 0.0002 %
2-Propanol (G.C.): 0.05%
Aldehydes (as HCHO): 0.002%
Methanol (G.C.): 0.05%
Water (H2O): 0.2%
Suitability for IR spectrometry:: passes the test
Fluorescence at 365 nm (as quinine): 2 ppb

Minimum assay (G.C.): 99.9%
Identity: IR passes test
Density 20/4: 0.779-0.783
Suitability: for LC-MS: passes test

Maximum limit of impurities
APHA colour: 10
Acidity: 0.0003 meq/g
Alkalinity: 0.0001 meq/g
Non-volatile matter: 0.0001 %
Base line drift (210 nm): 10 mUA
Water (H2O): 0.01 %
Gradient at 210 nm: 1 mUA
Gradient at 254 nm: 0.2 mUA
Fluorescence at 254 nm (as quinine): 1 ppb
Fluorescence at 365 nm (as quinine): 0.5 ppb
UV Spectrum (1cm cell; Ref.: water):
Transmittance at 190 nm: ≥30%
Transmittance at 193 nm: ≥60%
Transmittance at 195 nm: ≥80%
Transmittance at 200 nm: ≥90%
Transmittance at 230-400 nm: ≥98%

Рanreac 221881

Main substance (G.C.): 99.9%
Identity: IR passes the test
Density 20/4: 0.779-0.783
Suitable: for gradient acc. to ACS: passes the test
Distillation range (>95% dist.): 80-82°C
Maximum impurity limit
APHA color: 10
Acidity: 0.0005 meq/g
Alkalinity: 0.0001 meq/g
Non-volatile matter: 0.0001 %
Baseline drift (210 nm): 10 mUA
Water (H2O): 0.015 %
Gradient at 210 nm: 1 mUA
Gradient at 254 nm: 0.5 mUA
Fluorescence at 254 nm (as quinine): 1 ppb
Fluorescence at 365 nm (as quinine): 0.5 ppb

Panreac 361881

Main substance (G.C.): 99.9%
Density 20/4: 0.779-0.783
Maximum impurity limit
APHA color: 10
Acidity: 0.0005 meq/g
Alkalinity: 0.0001 meq/g
Non-volatile substances: 0.0004 %
ACS Gradient Suitability: Passes the test
Water (H2O): 0.02%
Suitability for IR spectrometry:: passes the test
Fluorescence at 254 nm (as quinine): 1 ppb
Fluorescence at 365 nm (as quinine): 1 ppb
UV spectrum (1cm cell; Ref.: water):
Transmittance at 190 (cutoff) nm: ≥10%
Transmittance at 193 nm: ≥55%
Transmittance at 195 nm: ≥70%
Transmittance at 200 nm: ≥90%
Transmittance at 230-400 nm: ≥98%
Microfiltered product (0.2 μm) and bottled under nitrogen atmosphere.