1、Designation: D3722 05 (Reapproved 2011)Standard Specification forNatural Red and Brown Iron Oxide Pigments1This standard is issued under the fixed designation D3722; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、revision. 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 dry and wet ground naturallyoccurring iron oxide, dry and wet ground calcined naturallyoccurring
3、iron oxide, and mixtures of these with synthetic ironoxides. These pigments are suitable for use in paints, coatings,and many other applications.2. Referenced Documents2.1 ASTM Standards:2D50 Test Methods for Chemical Analysis of Yellow, Or-ange, Red, and Brown Pigments Containing Iron andManganeseD
4、185 Test Methods for Coarse Particles in PigmentsD280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD1208 Test Methods for Common Properties of CertainPigments3. Composition and Properties3.1 The pigments shall conform to the following require-
5、ments:Total iron as Fe2O3, min, % 40.0Moisture and other volatile matter, max, % 1.0Organic coloring matter noneTotal sulfates expressed as SO3, max, % 2.0Matter soluble in water, max, % 2.0Matter soluble in water, max, % (primer pigments) 1.0Coarse particles (total residue retained on a No. 325(45-
6、m) sieve) max, %2.03.2 The mass color and character of the tint and the tintingstrength formed by a mixture with a white pigment shall bewithin mutually agreed upon limits of a standard acceptable toboth the purchaser and the seller.4. Sampling4.1 Two samples shall be taken at random from differentp
7、ackages 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 each 5tons (inch-pound or SI), except that for shipments of less than10 0
8、00 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 accordance with the appro-priate ASTM test me
9、thods. 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 Moisture and Other Volatile MatterTest MethodD280, Method A.5.1.3 Matter Soluble in WaterTest Meth
10、od D1208.5.1.4 Coarse Particles in Dry PigmentsTest MethodD185.6. Keywords6.1 iron oxide; natural brown; pigments1This 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 Pig
11、ment Specifications.Current edition approved June 1, 2011. Published June 2011. Originallyapproved in 1978. Last previous edition approved in 2005 as D3722 05. DOI:10.1520/D3722-05R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm
12、.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 Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity o
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14、 revision at any time by the 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.
15、Your comments will receive 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 c
16、opyrighted by ASTM International, 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/).D3722 05 (2011)2
