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Reagenti di derivatizzazione - Sililazione

  • Sostituisce gli idrogeni attivi, riduce la polarità e rende i composti più volatili.
  • Aumenta la stabilità dei derivati.

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Reagenti di derivatizzazione alchilazione

  • Add alkyl groups to functional hydrogens (H).
  • Decrease polarity on compounds containing acidic hydrogens, i.e., phenols, carboxylic acids.
  • Form an ester.

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Reagenti di derivatizzazione acilazione

  • Most commonly used for electron capture detection.
  • React with alcohols, amines, and phenols.
  • Frequently used for drugs of abuse confirmation.

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Kit gasolio esposto ad agenti atmosferici 2

Contains 1 mL each of these mixtures.
31233: Diesel Fuel #2 Standard
31234: Diesel Fuel #2 Standard: 25% Weathered
31235: Diesel Fuel #2 Standard: 50% Weathered
31236: Diesel Fuel #2 Standard: 75% Weathered

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Kit cherosene esposto ad agenti atmosferici

Contains 1 mL each of these mixtures.
31229: Kerosene Standard
31230: Kerosene Standard: 25% Weathered
31231: Kerosene Standard: 50% Weathered
31232: Kerosene Standard: 75% Weathered

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Kit #2 benzina esposta ad agenti atmosferici

Contains 1 mL each of these mixtures.
30096: Unleaded Gasoline Standard
30097: Unleaded Gasoline Standard: 25% Weathered
30098: Unleaded Gasoline Standard: 50% Weathered
30099: Unleaded Gasoline Standard: 75% Weathered
30436: Unleaded Gasoline Standard: 99% Weathered

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Acquaragia

There are four general types of mineral spirits, classified according to boiling point range (BPR):
  • Type I (Stoddard solvent), BPR 149–182 °C
  • Type II (high flash point), BPR 177–196 °C
  • Type III (odorless), BPR 149–196 °C
  • Type IV (low dry point), BPR 149–174 °C

    This standard is manufactured using the Type 1 mineral spirit.

    Note: Cat.#s 31260 and 31261 are produced with CAS# 64475-85-0, a Type 1 Mineral Spirit containing the proper ratio of n-alkanes (higher proportion) and isoparaffins/cycloalkanes (lower proportion). Lots produced prior to March 2017 contained CAS# 8030-30-6, a C10-C13 isoparaffins odorless Mineral Spirit with >98% isoparaffins (branched alkanes/aromatics) and minimal n-alkanes.

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Gasolio N. 2 (accelerante ASTM di classe 5)

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

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Cherosene (accelerante ASTM di classe 4)

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

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Benzina senza piombo (accelerante ASTM di classe 2)

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

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Standard solvente di Stoddard

We offer this certified reference material for those who need to calibrate Stoddard solvent separately. This standard is dissolved in methanol for analysis by either direct injection or purge and trap.

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