Standard Specification for Calcium Carbonate Pigments

ABSTRACT
This specification covers two types of high-content calcium carbonate pigments, Type PC and Type GC. Pigments shall be classified into six grades based on particle size, namely: Grade I (fine paint grade); Grade II (coarse paint grade); Grade III (filler grade); Grade IV (putty powder grade); Grade V (superfine grade); and Grade VI (ultrafine grade). Tests shall be conducted in accordance with the following test methods: calcium and magnesium reported as carbonate; moisture and other volatile matter; oil absorption; coarse particles; and dispersed color.
SCOPE
1.1 This specification covers two types of high-content calcium carbonate pigments, as follows:
1.1.1 Type PC—Calcium carbonate precipitate, prepared either by complete solution or by carbonation of lime.
1.1.2 Type GC—Ground mineral product.
1.2 Six grades of pigments, based on particle size (see 3.3) are covered.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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Publication Date
31-Jan-2008
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ASTM D1199-86(2008) - Standard Specification for Calcium Carbonate Pigments
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1199 −86(Reapproved2008)
Standard Specification for
Calcium Carbonate Pigments
This standard is issued under the fixed designation D1199; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Composition and Properties
1.1 This specification covers two types of high-content 3.1 The pigment may be prepared by chemical precipitation
calcium carbonate pigments, as follows: or by the fine grinding of natural calcium carbonate containing
1.1.1 Type PC—Calcium carbonate precipitate, prepared minerals. If additional agents are used or any surface treatment
either by complete solution or by carbonation of lime. isgiven,theirpurposeshallbeindicated;acceptanceshallbeas
1.1.2 Type GC—Ground mineral product. agreed upon by the purchaser and the seller.
1.2 Six grades of pigments, based on particle size (see 3.3) 3.2 Composition—The pigment shall conform to the re-
are covered. quirements for composition prescribed in Table 1.
1.3 The values stated in SI units are to be regarded as the 3.3 Fineness—The pigment shall conform to the following
standard. The values given in parentheses are for information general requirements for fineness for the grade specified:
only. 3.3.1 Grade I (Fine Paint Grade)—This grade possesses
substantial amounts of material in the fine sizes, and is in
2. Referenced Documents
general essentially below 15 to 20 µm maximum size. Coarse
particles retained on the No. 325 (45-µm) sieve shall be less
2.1 ASTM Standards:
than 0.05 %. The maximum Specific Surface Diameter (SSD)
C25 Test Methods for Chemical Analysis of Limestone,
shall be 2.5 µm.
Quicklime, and Hydrated Lime
3.3.2 Grade II (Coarse Paint Grade)—This grade is char-
D280 Test Methods for Hygroscopic Moisture (and Other
acterized by substantial amounts in the 5- to 45-µm range, and
Matter Volatile Under the Test Conditions) in Pigments
is lower in pigment value than Grade I. Coarse particles
D281 Test Method for Oil Absorption of Pigments by
retained on the No. 325 (45-µm) sieve shall be less than 0.5 %.
Spatula Rub-out
The maximum SSD shall be 6 µm.
D718 Test Methods for Analysis of Aluminum Silicate
3.3.3 Grade III (Filler Grade)—This grade is characterized
Pigment
by substantial amounts in the 10- to 45-µm range but with the
D1366 PracticeforReportingParticleSizeCharacteristicsof
coarse particles retained on No. 325 (45-µm) sieve less than
Pigments
25 % and a maximum SSD of9µm.
D3360 Test Method for Particle Size Distribution by Hy-
3.3.4 Grade IV (Putty Powder Grade) This grade possesses
drometer of the Common White Extender Pigments
lessfines,andhavesubstantialamountsofcoarseparticles.The
(Withdrawn 2003)
coarse particles, however, shall not exceed 30 % retained on
E97 Method of Test for Directional Reflectance Factor,
theNo.200(75-µm)sieve.ThemaximumSSDshallbe12µm.
45-Deg 0-Deg, of Opaque Specimens by Broad-Band
3.3.5 Grade V (Superfine Grade)—This grade is a superfine
Filter Reflectometry (Withdrawn 1991)
ground natural limestone and is characterized by major
amountslessthan5µmandaweightmedianparticlesizeinthe
range of 1 µm. The SSD is finer than 1 µm.
This specification is under the jurisdiction of ASTM Committee D01 on Paint
3.3.5.1 ParticlesizemethodsforGradeVthatareapplicable
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.31 on Pigment Specifications.
include transmission electron microscopy, scanning electron
Current edition approved Feb. 1, 2008. Published February 2008. Originally
microscopy,andtheSedigraph. SpecificSurfaceDiametercan
approved in 1952. Last previous edition approved in 2003 as D1199 – 86 (2003).
DOI: 10.1520/D1199-86R08.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM The sole source of supply of the sedigraph known to the committee at this time
Standards volume information, refer to the standard’s Document Summary page on is Micromeritics, 5680 Goshen Springs Rd., Norcross, GA30093. If you are aware
the ASTM website. of alternative suppliers, please provide this information to ASTM International
The last approved version of this historical standard is referenced on Headquarters.Your comments will receive careful consideration at a meeting of the
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D1199−86(2008)
TABLE 1 Composition of Calcium Carbonate Pigments
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