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- Chromatography
Dichloromethane stabilized with ~ 20 ppm of amylene for UV, IR, HPLC, GPC, ACS
The products are delivered within 2-5 days for the territory of Bulgaria
Dichloromethane stabilized with ~ 20 ppm of amylene for UV, IR, HPLC, GPC, ACS
361254
itwreagents
Minimum assay (G.C.): 99.9%
Density 20/4: 1.322-1.325
Maximum limit of impurities
APHA colour: 10
Acidity: 0.0002 meq/g
Alkalinity: 0.0002 meq/g
Non-volatile matter: 0.0003 %
Chlorine (Cl): 0.0001%
Carbon Tetrachloride (G.C.): 0.005 %
2-Methyl-2-Buten: 0.005 %
Water (H2O): 0.01 %
Suitability for IR spectrometry:: passes 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 233 (Cut off) nm: ≥10%
Transmittance at 235 nm: ≥40%
Transmittance at 240 nm: ≥75%
Transmittance at 245 nm: ≥90%
Transmittance at 255 nm: ≥98%
Transmittance at 260-400 nm: ≥99%
Data of interest in HPLC:
P' + 0,25 E: 5.6
Rohrschneider Polarity: 3.1
Eluotropic value E° (Al2O3): 0.42
Sol. H2O in solv. at 20°C: 0.17
For critical jobs, purge with nitrogen.
Microfiltered product (0.2 μm) and bottled under nitrogen atmosphere.
Carcinogenicity
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This case study is only valid when ordering chemical reagents that cannot be sent by a courier service that does not have a license to transport dangerous goods, such as the reagents themselves. Our refusal to send chemicals by Econt or Speedy is because the couriers themselves refuse to take such cargoes, due to lack of ADR. Therefore, such orders are fulfilled through Transpress or another shipping company meeting the requirements.
