ASTM D3724 - 01(2012)

    Standard Specification for Synthetic Brown Iron Oxide Pigment

    Active Standard ASTM D3724 | Developed by Subcommittee: D01.31

    Book of Standards Volume: 06.03


      Format Pages Price  
    PDF 2 $38.00   ADD TO CART
    Hardcopy (shipping and handling) 2 $38.00   ADD TO CART


    Abstract

    This specification establishes the properties and requirements for the pigments commercially known as synthetic pure brown iron oxides and its blends, suitable for use in paints and coatings. The pigment, which shall be soft, dry, and finely pulverized, may be manufactured by either of the following methods: precipitation of iron salts; calcination of precipitated iron oxides; blends of synthetic red, yellow, and black iron oxides; and blends of synthetic red, yellow, and black iron oxides plus the addition of carbon black. Specimens shall be suitably sampled and tested, and shall adhere to specified requirements as to total iron oxide, ferrous iron, carbon black, moisture and other volatile matter, organic coloring matter, total sulfates, coarse particles (total residue retained on No. 325 sieve), and water-soluble matter.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers the pigments commercially known as synthetic pure brown iron oxides and blends. These pigments are suitable for use in paints and coatings. Methods of manufacture are:

    1.1.1 Precipitation of iron salts.

    1.1.2 Calcination of precipitated iron oxides.

    1.1.3 Blends of synthetic red, yellow, and black iron oxides.

    1.1.4 Blends of synthetic red, yellow, and black iron oxides plus the addition of carbon black to a maximum of 5.0 %. Small amounts of carbon black are added to obtain tinting colors not obtainable when synthetic brown iron oxide or carbon black are used singly.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.


    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

    D50 Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese

    D185 Test Methods for Coarse Particles in Pigments

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

    D387 Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller

    D1208 Test Methods for Common Properties of Certain Pigments

    D3872 Test Method for Ferrous Iron in Iron Oxides

    E350 Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron

    E351 Test Methods for Chemical Analysis of Cast Iron--All Types


    ICS Code

    ICS Number Code 87.060.10 (Pigments and extenders)

    UNSPSC Code

    UNSPSC Code 31211503(Pigment paints)


    Referencing This Standard

    DOI: 10.1520/D3724-01R12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D3724-01(2012), Standard Specification for Synthetic Brown Iron Oxide Pigment, ASTM International, West Conshohocken, PA, 2012, www.astm.org

    Back to Top