ASTM D4677 - 87(2013)

    Standard Classification for Rubber Compounding Materials—Titanium Dioxide

    Active Standard ASTM D4677 | Developed by Subcommittee: D11.20

    Book of Standards Volume: 09.01


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    ASTM D4677

    Significance and Use

    3.1 Titanium dioxide is used in rubber compounding as a colorant to impart whiteness to any desired end product. It is used in sidewalls of automobile tires.

    3.2 It is chemically inert and slightly basic with a pH of 7.0 to 8.0. The free-chalking, weathering properties of anatase titanium-dioxide provide a (self-cleaning) white appearance in outdoor applications.

    1. Scope

    1.1 This classification covers the compounding material known as titanium dioxide. It is generally used in rubber compounds to impart whiteness to selected products. Typical chemical and physical properties are included.

    1.2 This standard does not purport to address all of the safety problems, 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. Table 1

    TABLE 1 Properties of Titanium Dioxide (By Type)

     

    Test
    Method

    Type I
    (Anatase)

    Type II
    (Rutile)

    Type III
    (Rutile)

    TiO2, min, %

    D1394

    95

    92

    85

    pH

    D1208

    7–8.0

    7–8.0

    7–8.0

    Coarse particles, max, %

    D185

    0.2

    0.2

    0.2

    Moisture, max,%

    D280

    0.7

    0.7

    1.5

    RutileA

    D3720

    1 % max

    99 % min

    99 % min

    Tint StrengthB

    ...

    ...

    ...

    ...

    BrightnessB

    ...

    ...

    ...

    ...

    A Percent rutile as a percent of total TiO 2 content.
    B Test methods to be developed and agreed upon by supplier and user. A basic white sidewall formula could be chosen to generate inherent color properties.


    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

    D185 Test Methods for Coarse Particles in Pigments

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

    D1208 Test Methods for Common Properties of Certain Pigments

    D1394 Test Methods for Chemical Analysis of White Titanium Pigments

    D3720 Test Method for Ratio of Anatase to Rutile in Titanium Dioxide Pigments by X-Ray Diffraction


    ICS Code

    ICS Number Code 83.040.20 (Rubber compounding ingredients)

    UNSPSC Code

    UNSPSC Code 12171604(Titanium dioxide)


    DOI: 10.1520/D4677

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