Description

Catalogue Number

119899

Synonyms

Nitrite standard for aqueous matrices ready foruse

Product Information

HS Code

2834 10 00

Quality Level

MQ100

Physicochemical Information

Density

1.001 g/cm3 (20 °C)

pH value

7 (H₂O, 20 °C)

Safety Information according to GHS

Storage class

10 - 13 Cairan dan padatan lain

WGK

WGK 2 membahayakan air secara signifikan

Disposal

28

Larutan encer : Kategori D

Storage and Shipping Information

Storage

Simpan pada +15°C hingga +25°C.

Specifications

Concentration β (NO₂⁻)

990 - 1010 mg/l

Determination method: Cerimetric titration.

The content of this solution was determined by back-titration with Ammonium(II) ferrous sulfate (article number 1.03792) standardized by Cerium(IV) sulfate (article number 1.09092) against volumetric standard Iron(II)ethylendiammonium sulfate (article number 1.02402). The expanded measurement uncertainty is ± 0.7 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 8040 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard Iron(II)ethylendiammonium sulfate measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.