ASTM D603-66(1996)e1

Standard Specification for Aluminum Silicate Pigments (Hydrous) (Withdrawn 2004)

SCOPE
1.1 This specification covers the white pigments that consist substantially of natural hydrous aluminum silicate  (of the 1:1 layer type), and are restricted to those minerals which conform to the chemical limits prescribed herein and which can be suitably processed to what is commercially known as paint pigment quality.
WITHDRAWN RATIONALE
This specification covers the white pigments that consist substantially of natural hydrous aluminum silicate (of the 1:1 layer type), and are restricted to those minerals which conform to the chemical limits prescribed herein and which can be suitably processed to what is commercially known as paint pigment quality.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this specification was withdrawn in June 2004. This standard is being withdrawn without replacement due to its limited use by industry.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1995
• Withdrawal Date: 28-Jun-2004
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
e1
Designation: D 603 – 66 (Reapproved 1996)
Standard Specification for
Aluminum Silicate Pigments (Hydrous)
This standard is issued under the fixed designation D 603; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Keywords were added editorially in May 1996.
TABLE 1 Pigment Composition Requirements
1. Scope
Ideal Typical Range Max
1.1 This specification covers the white pigments that consist
2 A
Aluminum oxide, Al O , % 39.50 38.8 37 to 42 .
substantially of natural hydrous aluminum silicate (of the 1:1 2 3
B
Silicon dioxide, SiO , % 46.54 45.4 48 to 43 .
layer type), and are restricted to those minerals which conform
Iron oxide, Fe O , % . 0.3 . 0.5
2 3
to the chemical limits prescribed herein and which can be
Titanium dioxide, TiO , % . 1.5 . 2.0
Calcium oxide, CaO,% . 0.1 . 0.2
suitably processed to what is commercially known as paint
Sodium oxide, Na O, % . 0.1 . 0.3
pigment quality.
Potassium oxide, K O, % . 0.1 . 2.0
Other oxides, % . trace . 0.1
2. Referenced Documents
Free moisture (105°C), % . . . 1.0
Loss on ignition 13.96 13.8 . 15.0
2.1 ASTM Standards:
(1000°C), %
D 281 Test Method for Oil Absorption of Pigments by
A
Permitting up to 5 % excess Al O , for example as allophane.
2 3
Spatula Rub-Out B
Permitting up to 5 % excess SiO , for example as quartz.
D 422 Test Method for Particle-Size Analysis of Soils
D 718 Test Methods for Analysis of Aluminum Silicate
3.2 pH—The pH of a water slurry of the pigment shall be
Pigment
within a range as agreed upon between the purchaser and the
D 1208 Test Methods for Common Properties of Certain
seller.
Pigments
3.3 Water-Soluble Matter—The water-soluble matter shall
D 1483 Test Method for Oil Absorption of Pigments by
be not more than 0.50 %.
Gardner-Coleman Method
3.4 Wet-Sieve Residue—The pigment shall contain no more
D 2448 Test Method for Water-Soluble Salts in Pigments by
than 0.5 % wet-sieve residue retained on a 45-μm (No. 325)
Measuring the Specific Resistance of the Leachate of the
sieve (“grit” or “coarse particles”) except as may be agreed
Pigment
upon between the purchaser and the seller.
E 70 Test Method for pH of Aqueous Solution with the
3.5 Color—The color (brightness, reflectance) shall con-
Glass Electrode
form to the following requirements:
3.5.1 The color shall be equal, within agreed upon toler-
3. Composition of Properties
ances, to that of a reference standard agreed upon between the
3.1 Preparation—The pigment shall be made by grinding,
purchaser and the seller, or
milling, washing, purifying, size-fractionating, or otherwise
3.5.2 The color shall be not less than a guaranteed minimum
processing, natural hydrous aluminum silicates, and shall
expressed as percent reflectance of standard illuminant C at
conform to the composition requirements (weight percent)
457 nm compared to a freshly smoked standard magnesium
given in Table 1.
oxide surface by means of an accepted integrating sphere
reflectance spectrophotometer or a monochromatic reflectance
meter, or
This specification is under the jurisdiction of ASTM Committee D-1 on Paint
3.5.3 The color shall be specified by actual determination of
and Related Coatings, Materials, and Applications, and is the direct responsibility of
Subcommittee D01.31 on Pigment Specifications.
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