Reference materials, acid number standards, total acid number (TAN)

About this item

Acid number reference materials are intended for use in the determination of acid number (AN) in petroleum products in accordance with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by colour-indicator titration).

Certifications: GMP/GLP, ISO 9001, ISO/IEC 17025 and ISO/IEC 17043 certified.

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Water, HiPerSolv CHROMANORM® for HPLC

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Tetrahydrofuran ≥99.5% (by anhydrous basis) stabilised, AnalaR NORMAPUR® Reag. Ph. Eur., ACS analytical reagent

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2-Propanol, anhydrous (max. 0.003% H₂O) ≥99.8%

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1-Butanol ≥98.5%, GPR RECTAPUR®

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Chloroform ≥98% stabilised, TECHNICAL

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2-Propanol, SupraSolv® for gas chromatography, Supelco®

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Paraffin, liquid, liquid Ph. Eur.

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Methanol ≥99.8%, AnalaR NORMAPUR® Reag. Ph. Eur., ACS analytical reagent

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n-Heptane ≥99%, GPR RECTAPUR®

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N-Ethyldiisopropylamine 99+%

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Water, CHROMASOLV™ for LC-MS, Riedel-de Haën™

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Tetrahydrofuran, extra dry over Molecular Sieve 99.5% stabilised, AcroSeal®

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Ethanol absolute ≥99.9% (by GC), SPECTRONORM® for spectroscopy

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Pyridine ≥99%

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N,N-Dimethylformamide, extra dry over Molecular Sieve 99.8%, AcroSeal®

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