Standard Specification for Shellac Varnishes

SCOPE
1.1 This specification covers shellac varnish consisting of a solution or "cut" of a specified type and grade of dry lac resin in specially denatured alcohol. Ninety-five percent (190 proof) ethyl alcohol, specially denatured according to Formula No. 1 of the Alcohol, Tobacco, and Firearms of the Treasury Dept., is the solvent most commonly used. However, other specially denatured alcohols and proprietary solvents are also used for this purpose.

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Historical
Publication Date
27-Apr-1989
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Ref Project

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Technical specification
ASTM D360-89(1996)e1 - Standard Specification for Shellac Varnishes
English language
2 pages
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 360 – 89 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Shellac Varnishes
This standard is issued under the fixed designation D 360; 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 October 1996.
1. Scope agreement between the purchaser and the seller.
1.1 This specification covers shellac varnish consisting of a
6. Body and Cut
solution or “cut” of a specified type and grade of dry lac resin
6.1 The body and cut of the respective types and grades
in specially denatured alcohol. Ninety-five percent (190 proof)
shall be based on the percent of nonvolatile matter and shall
ethyl alcohol, specially denatured according to Formula No. 1
conform to the following minimum requirements:
of the Alcohol, Tobacco, and Firearms of the Treasury Dept., is
Nonvolatile Matter, min,
the solvent most commonly used. However, other specially
%
denatured alcohols and proprietary solvents are also used for
Bleached,
this purpose. Orange, Regular
Grades and
A and B Refined
2. Referenced Documents
2.1 ASTM Standards: Very light body (3-lb (1.4-kg) cut) 28.5 28.0
varnish
D 29 Test Methods of Sampling and Testing Lac Resins
Light body (4-lb (1.8-kg) cut) varnish 35.0 34.5
D 207 Specification for Dry Bleached Lac
Medium body (4.5-lb (2.0-kg) cut) 37.5 37.0
D 237 Specification for Orange Shellac and Other Lacs 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
3. Types, Grades, and Bodies
varnish
3.1 This specification covers two grades, A and B, of orange Extra heavy body (8-lb (3.6-kg) cut) 51.0 50.5
varnish
shellac varnish and two grades, regular and refined, of bleached
lac varnish. Each type and grade may be furnished in very NOTE 2—The term “cut” is defined as the number of pounds of dry lac
resin (containing only that amount of moisture acceptable for proper
light, light, medium, heavy, very heavy, or extra heavy body
cutting with the solvent to ensure a satisfactory varnish) that were added
varnish, as specified.
to 1 gal (3.8 L) of specified solvent in manufacturing the varnish.
Allowance has, therefore, been made for 2 % maximum moisture and
4. Color
other volatile matter and 3 % insoluble matter in orange shellac, and for
4.1 The color of shellac varnish shall be no darker than the
6 % moisture and other volatile matter in
...

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