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ASTM D50-90(2005)

Historical Reaffirmation

Standard Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese

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1.1 These test methods cover procedures for the chemical analysis of yellow, orange, red, and brown pigments containing iron and manganese. The test methods apply specifically to the following pigments: synthetic hydrated yellow iron oxide, yellow ocher, red and brown iron oxides, raw and burnt umber, raw and burnt sienna, and venetian red.

1.2 The analytical procedures appear in the following order:

ASTM
Method
Refer-
Dry PigmentsSections ences
Moisture and Other Volatile MatterD 280
Loss on Ignition
Coarse Particles D 185
Matter Soluble in WaterD 1208
Organic Coloring Matter
Iron Oxide and
Calcium Compounds (Reported as CaO) and
Sulfates Soluble in Hydrochloric Acid and
Lead Chromate (in Ochers)
Calcium Carbonate (in Venetian Red)C 25
Manganese (in Siennas and Umbers) and
Pigment Pastes in Oil
Pigment Content D 1208
Moisture and Other Volatile MatterD 1208
Nonvolatile Matter in Vehicle
Moisture by Distillation D 1208
Coarse Particles and Skins D 185
Consistency (Stormer) D 562

1.3 &solely-SI-units;

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


These test methods compile in one place, recommended procedures for analyzing inorganic colored pigments. These pigments are used extensively in paints, and for this reason their compositions are important to the formulators and user.

SDO ASTM: ASTM International
Document Number D50
Publication Date Sept. 1, 2005
Language en - English
Page Count 5
Revision Level 90(2005)
Supercedes
Committee D01.31
Publish Date Document Id Type View
June 1, 2023 D0050-90R23 Reaffirmation
May 1, 2019 D0050-90R19 Reaffirmation
June 1, 2011 D0050-90R11 Reaffirmation
Sept. 1, 2005 D0050-90R05 Reaffirmation
May 10, 1999 D0050-90R99 Reaffirmation