ASTM D50 - 90(2019)

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

    Active Standard ASTM D50 | Developed by Subcommittee: D01.31

    Book of Standards Volume: 06.03


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    Significance and Use

    3.1 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.

    1. Scope

    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 Pigments

    Sections

    ences

    Moisture and Other Volatile Matter

    6

    D280

    Loss on Ignition

    7

     

    Coarse Particles

    8

    D185

    Matter Soluble in Water

    9

    D1208

    Organic Coloring Matter

    10

     

    Iron Oxide

    11 and 12

     

    Calcium Compounds (Reported as CaO)

    13 and 14

     

    Sulfates Soluble in Hydrochloric Acid

    15 and 16

     

    Lead Chromate (in Ochers)

    17

     

    Calcium Carbonate (in Venetian Red)

    18

    C25

    Manganese (in Siennas and Umbers)

    19 and 20

     

     

    Pigment Pastes in Oil

     

     

     

    Pigment Content

    21

    D1208

    Moisture and Other Volatile Matter

    22

    D1208

    Nonvolatile Matter in Vehicle

    23

     

    Moisture by Distillation

    24

    D1208

    Coarse Particles and Skins

    25

    D185

    Consistency (Stormer)

    26

    D562

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    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, health, and environmental practices and determine the applicability of regulatory limitations prior to us.

    1.5 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C25 Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime

    D185 Test Methods for Coarse Particles in Pigments

    D280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments

    D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer

    D1193 Specification for Reagent Water

    D1208 Test Methods for Common Properties of Certain Pigments

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


    ICS Code

    ICS Number Code 87.060.10 (Pigments and extenders)

    UNSPSC Code

    UNSPSC Code 31211503(Pigment paints)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D0050-90R19

    Citation Format

    ASTM D50-90(2019), Standard Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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