GB/T 24778-2009Guidance of chemical identification (English PDF)

2.1

In order to make the material stable and intentionally added substances.

NOTE. In other areas, other additives may also have the effect, for example, pH- adjusting agents, or coloring agents.

2.2

For the preparation and composition of intentionally added substances.

2.3

There is no single individual has a unique chemical properties in the material.

2.4

Substances three former EU chemicals regulatory framework, EINECS (European Inventory of Existing Commercial Chemical Substances), ELINCS (Europe has been through

Daily Chemicals Directory) and NLP (no longer defined as a polymer directory) collectively. The EC number directory as a source of EC substance identities.

2.5

In the production of the substance does not want to appear in the ingredients. It may come from raw materials or the production process side reactions or incomplete response result. Although not intentionally added, but present in the final substance.

2.6

Nor is not additive impurities in the material as a component of the active portion of the substance.

2.7

Usually by the substance (s) may be, the main component of the mass fraction of at least 80% of the substance.

2.8

Usually by the substance (s) may be, more than a major component mass fraction greater than or equal to 10% and less than 80% of the material.

2.9

Two or more substances of the mixture or solution.

GB 23350-2021 | GB/T 27842-2011 | GB/T 25322-2010 | GB/T 24777-2009 | GB/T 24776-2009 | GB/T 24775-2009 | […]