n-Heptan, Uvasol® for spectroscopy, Supelco®
Leverantör: Merck
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Fara
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Synonyms:
high purity solvents
M-Clarity™ quality level = MQ100
Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol® solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol® solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph Eur and ACS.
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Formel:
H₃C(CH₂)₅CH₃ MW: 100,20 g/mol Kokpunkt: 98,4 °C (1013 hPa) Smältpunkt: –90,6 °C Densitet: 0,6838 g/cm³ (20 °C) Flampunkt: –4 °C Storage Temperature: Omgivande |
MDL Number:
MFCD00009544 CAS nummer: 142-82-5 EINECS: 205-563-8 UN: 1206 ADR: 3,II Merck Index: 13,04679 |
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Specifikation testresultat
| Purity (GC) | ≥ 99.3 % |
| Evaporation residue | ≤ 0.0002 % |
| Water | ≤ 0.005 % |
| Color | ≤ 10 Hazen |
| Acidity | ≤ 0.0001 meq/g |
| Alkalinity | ≤ 0.0002 meq/g |
| Fluorescence (as quinine at 254 nm) | ≤ 1.0 ppb |
| Fluorescence (as quinine at 365 nm) | ≤ 1.0 ppb |
| Transmission (at 200 nm) | ≥ 20 % |
| Transmission (at 210 nm) | ≥ 55 % |
| Transmission (at 220 nm) | ≥ 80 % |
| Transmission (at 228 nm) | ≥ 90 % |
| Transmission (from 245 nm) | ≥ 98 % |
| Absorbance (at 200 nm) | ≤ 0.70 |
| Absorbance (at 210 nm) | ≤ 0.26 |
| Absorbance (at 220 nm) | ≤ 0.10 |
| Absorbance (at 228 nm) | ≤ 0.05 |
| Absorbance (from 245 nm) | ≤ 0.01 |
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