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Normas ASTM – AENOR
ASTM D765-87(2020)

ASTM D765-87(2020)

Standard Specification for Raw and Burnt Sienna Pigments

Fecha:
2020-06-19 /Active
Abstract:

This specification establishes the properties and requirements for the pigments commercially known as raw sienna and burnt sienna in the dry and paste in oil forms. The dry pigments shall be sampled and tested as appropriate, and conform accordingly to composition requirements as to iron oxide, calcium compounds, moisture and other volatile matter, coarse particles (total residue retained on a No. 325 sieve), and organic colors. The pigments in paste in oil form shall conversely be tested and conform to composition requirements as to pigment, nonvolatile vehicle, moisture by distillation, and coarse particles (total residue retained on a No. 325 sieve). Both forms shall adhere to specified mass color, tint character, and tinting strength requirements as well.

Scope:

1.1 This specification covers the pigments commercially known as raw sienna and burnt sienna.

1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords:
burnt sienna; iron; manganese; pigment; raw sienna;
38,13
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