1、Designation: D 3724 01 (Reapproved 2007)Standard Specification forSynthetic Brown Iron Oxide Pigment1This standard is issued under the fixed designation D 3724; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 suit
3、able 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
4、 a 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
5、 Documents2.1 ASTM Standards:2D50 Test Methods for Chemical Analysis of Yellow, Or-ange, Red, and Brown Pigments Containing Iron andManganeseD 185 Test Methods for Coarse Particles in PigmentsD 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in Pigments
6、D 387 Test Method for Color and Strength of ChromaticPigments with a Mechanical MullerD 1208 Test Methods for Common Properties of CertainPigmentsD 3872 Test Method for Ferrous Iron in Iron OxidesE 350 Test Methods for ChemicalAnalysis of Carbon Steel,Low-Alloy Steel, Silicon Electrical Steel, Ingot
7、 Iron, andWrought IronE 351 Test Methods for Chemical Analysis of Cast IronAll Types3. 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 %Carb
8、on black, max, % 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 ox
9、ides are available 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 D 387.4. Sampling4.
10、1 Two samples 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
11、000 lb, except 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 conducte
12、d in accordance 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 D 3872.5.1.3 Mois
13、ture and Other Volatile MatterTest MethodsD 280Use Method A for pigments containing less than 8 %ferrous iron oxide. Use Method B for pigments containingmore than 8 % ferrous iron oxide.5.1.4 Matter Soluble in WaterTest Methods D 1208.1This specification is under the jurisdiction of ASTM Committee D
14、01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1978. Last previous edition approved in 2001 as D 3724 01.2For reference
15、d ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Con
16、shohocken, PA 19428-2959, United States.5.1.5 Coarse Particles in Dry PigmentTest MethodsD 185.5.1.6 Carbon Black ContentTest Methods E 350 orE 351.6. Keywords6.1 brown iron oxide; pigment; syntheticASTM International takes no position respecting the validity of any patent rights asserted in connect
17、ion 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 the responsibl
18、e 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 careful cons
19、ideration 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 International, 100 B
20、arr 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).D 3724 01 (2007)2
