ASTM D360-12(2019)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D360 −12 (Reapproved 2019)
Standard Specification for
Shellac Varnishes
This standard is issued under the fixed designation D360; 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.
1. Scope lac varnish. Each type and grade may be furnished in very
light, light, medium, heavy, very heavy, or extra heavy body
1.1 This specification covers shellac varnish consisting of a
varnish, as specified.
solution or “cut” of a specified type and grade of dry lac resin
in specially denatured alcohol. Ninety-five percent (190 proof)
4. Color
ethyl alcohol, specially denatured according to Formula No. 1
4.1 The color of shellac varnish shall be no darker than the
of theAlcohol,Tobacco, and Firearms of theTreasury Dept., is
color of a standard varnish of the same nonvolatile matter
the solvent most commonly used. However, other specially
content mutually agreed upon between the purchaser and the
denatured alcohols and proprietary solvents are also used for
seller.
this purpose.
NOTE 1—Attention is called to the fact that the purchaser and the seller
1.2 The values stated in inch-pound units are to be regarded
must agree upon one of the two methods for determining color appearing
as standard. The values given in parentheses are mathematical
in Test Methods D29.
conversions to SI units that are provided for information only
and are not considered standard.
5. Drying Time
1.3 This international standard was developed in accor-
5.1 Shellac varnish shall dry hard in 1 h. Shellac varnishes
dance with internationally recognized principles on standard-
having a body greater than that for a light body varnish shall be
ization established in the Decision on Principles for the
thinned to the nonvolatile matter content of a light body
Development of International Standards, Guides and Recom-
varnish.Specialconditionsforthistestmaybemadebymutual
mendations issued by the World Trade Organization Technical
agreement between the purchaser and the seller.
Barriers to Trade (TBT) Committee.
6. Body and Cut
2. Referenced Documents
6.1 The body and cut of the respective types and grades
2.1 ASTM Standards:
shall be based on the percent of nonvolatile matter and shall
D29 Test Methods for Sampling and Testing Lac Resins
conform to the following minimum requirements:
(Withdrawn 2005)
Nonvolatile Matter, min,
D207 Specification for Dry Bleached Lac (Discontinued %
Bleached,
2000) (Withdrawn 2001)
Orange, Regular
D237 Specification for Orange Shellac and Other Lacs
Grades and
(Withdrawn 2006) A and B Refined
Very light body (3-lb (1.4-kg) cut) 28.5 28.0
3. Types, Grades, and Bodies
varnish
Light body (4-lb (1.8-kg) cut) varnish 35.0 34.5
3.1 This specification covers two grades,Aand B, of orange
Medium body (4.5-lb (2.0-kg) cut) 37.5 37.0
shellacvarnishandtwogrades,regularandrefined,ofbleached
varnish
Heavy body (5-lb (2.3-kg) cut) varnish 40.0 39.5
Very heavy body (6-lb (2.7-kg) cut) 44.0 43.5
This specification is under the jurisdiction of the ASTM Committee D01 on
varnish
Paint and Related Coatings, Materials, and Applications and is the direct responsi-
Ex
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