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.
ASTM D3724-01(2012) Referenced Document
ASTM D1208 Standard Test Methods for Common Properties of Certain Pigments*, 2019-06-01 Update
ASTM D185 Standard Test Methods for Coarse Particles in Pigments, Pastes, and Paints
ASTM D280 Standard Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
ASTM D387 Standard Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller*, 2024-04-20 Update
ASTM D3872 Standard Test Method for Ferrous Iron in Iron Oxides
ASTM D50 Standard Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese*, 2023-06-01 Update
ASTM E350 Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron
ASTM E351 Standard Test Methods for Chemical Analysis of Cast Iron-All Types
ASTM D3724-01(2012) history
2019ASTM D3724-01(2019) Standard Specification for Synthetic Brown Iron Oxide Pigment
2012ASTM D3724-01(2012) Standard Specification for Synthetic Brown Iron Oxide Pigment
2001ASTM D3724-01(2007) Standard Specification for Synthetic Brown Iron Oxide Pigment
2001ASTM D3724-01 Standard Specification for Synthetic Brown Iron Oxide Pigment
1982ASTM D3724-82(1995)e1 Standard Specification for Synthetic Brown Iron Oxide Pigment