Standard Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals

Importancia y uso:

4.1 Specific gravity, apparent, may be used as a qualitative test in establishing the identity of a chemical. It may be used to calculate the volume occupied by a product whose weight is known, or to calculate the weight of a product from its volume. It may be used to determine the composition of binary mixtures of pure chemicals. In the case of most refined industrial chemicals specific gravity, apparent, is of minimal value in defining quality, although it may detect gross contamination.

4.2 Of the two test methods described, the pycnometer method (Test Method B, 1.1.2) is the most accurate and precise. For this reason it is the preferred method in case of disputes. The hydrometer method (Test Method A, 1.1.1) is the least accurate and precise, but it is also the simplest and fastest to perform and is often entirely satisfactory for many purposes. If the sample is too viscous to permit the hydrometer to float freely, the pycnometer test method should be used.

Subcomité:

D16.04

Referida por:

D5194-24A, D0304-11R19, D5194-24A, D4614-11R19, D1492-21, D4659-19, D7887-20R25, D3734-05R25, D1492-21, D2378-22, C0494_C0494M-24, D0268-25, D4171-22, D1992-17R22, D0792-20, C0465-23, C0465-23, D0792-20, D3585-24, D3800-22, D0792-20, D5194-24A, D4615-22, D1492-21, D8046-21, E1547-09R23, D4836-09R23, C0494_C0494M-24, C0494_C0494M-24, F1862_F1862M-24

Volúmen:

06.04

Número ICS:

71.040.40 (Chemical analysis)

Palabras clave:

analysis; apparent; hydrometer; pycnometer; specific gravity;