1、Designation: D3724 01 (Reapproved 2012)Standard Specification forSynthetic Brown Iron Oxide Pigment1This standard is issued under the fixed designation D3724; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the pigments commerciallyknown as synthetic pure brown iron oxides and blends. Thesepigments are suitabl
3、e for use in paints and coatings. Methodsof 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 oxidesplus the addition of carbon black to a
4、maximum of 5.0 %.Small amounts of carbon black are added to obtain tintingcolors not obtainable when synthetic brown iron oxide orcarbon black are used singly.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Do
5、cuments2.1 ASTM Standards:2D50 Test Methods for ChemicalAnalysis of Yellow, Orange,Red, and Brown Pigments Containing Iron and Manga-neseD185 Test Methods for Coarse Particles in PigmentsD280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD387 T
6、est Method for Color and Strength of ChromaticPigments with a Mechanical MullerD1208 Test Methods for Common Properties of CertainPigmentsD3872 Test Method for Ferrous Iron in Iron OxidesE350 Test Methods for Chemical Analysis of Carbon Steel,Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, an
7、dWrought IronE351 Test Methods for Chemical Analysis of Cast IronAllTypes3. Composition and Properties3.1 The pigment shall be a manufactured iron oxide or ablend. It shall be a soft dry finely pulverized pigment and shallconform to the following requirements:FeO 0to10%Fe2O383 to 98 %Carbon black, m
8、ax, % 5.0 %Moisture and other volatile matter, max, % 1.0 %Organic coloring matter noneTotal sulfates expressed as SO3, max, % 2.0 %Coarse particles (total residue retained on No.325 (45-m) mesh sieve, max, %1.0 %Matter soluble in water, max, % 0.5 %3.2 Inasmuch as synthetic brown iron oxides are av
9、ailable ina wide range of shades. The mass color and character of the tintand the tinting strength formed by a mixture with a whitepigment shall be within mutually agreed upon limits of astandard acceptable to both the purchaser and the seller whentested by Test Method D387.4. Sampling4.1 Two sample
10、s shall be taken at random from differentpackages from each lot, batch, days pack, or other unit ofproduction in a shipment. When no markings distinguishingbetween units of production appear, samples shall be takenfrom different packages in the ratio of two samples for each4540 kg or 10 000 lb, exce
11、pt that for shipments of less than10 000 lb, two samples shall be taken. At the option of thepurchaser, the samples may be tested separately or afterblending in equal quantities the samples from the sameproduction unit to form a composite sample.5. Test Methods5.1 Tests shall be conducted in accorda
12、nce with the appro-priate ASTM test methods. Test procedures not covered byASTM test methods shall be mutually agreed upon between thepurchaser and the seller.5.1.1 Total Iron Oxide, Sulfur and Organic ColoringMatterTest Methods D50.5.1.2 Ferrous Iron ContentTest Method D3872.5.1.3 Moisture and Othe
13、r Volatile MatterTest MethodsD280Use Method A for pigments containing less than 8 %1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current ed
14、ition approved Nov. 1, 2012. Published November 2012. Originallyapproved in 1978. Last previous edition approved in 2007 as D3724 01 (2007).DOI: 10.1520/D3724-01R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Bo
15、ok of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1ferrous iron oxide. Use Method B for pigments containingmore than 8 % ferrous iron
16、 oxide.5.1.4 Matter Soluble in WaterTest Methods D1208.5.1.5 Coarse Particles in Dry PigmentTest MethodsD185.5.1.6 Carbon Black ContentTest Methods E350 or E351.6. Keywords6.1 brown iron oxide; pigment; syntheticASTM International takes no position respecting the validity of any patent rights assert
17、ed in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by t
18、he responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive
19、 careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Interna
20、tional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D3724 01 (2012)2
