ASTM D360-89(2001)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D360 – 89 (Reapproved 2001)
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 5. Drying Time
1.1 This specification covers shellac varnish consisting of a 5.1 Shellac varnish shall dry hard in 1 h. Shellac varnishes
solution or “cut” of a specified type and grade of dry lac resin having a body greater than that for a light body varnish shall be
in specially denatured alcohol. Ninety-five percent (190 proof) thinned to the nonvolatile matter content of a light body
ethyl alcohol, specially denatured according to Formula No. 1 varnish.Specialconditionsforthistestmaybemadebymutual
of theAlcohol,Tobacco, and Firearms of theTreasury Dept., is agreement between the purchaser and the seller.
the solvent most commonly used. However, other specially
6. Body and Cut
denatured alcohols and proprietary solvents are also used for
6.1 The body and cut of the respective types and grades
this purpose.
shall be based on the percent of nonvolatile matter and shall
2. Referenced Documents
conform to the following minimum requirements:
2.1 ASTM Standards:
Nonvolatile Matter, min,
%
D29 Test Methods for Sampling and Testing Lac Resins
Bleached,
D207 Specification for Dry Bleached Lac (Discontinued
Orange, Regular
2000)
Grades and
A and B Refined
D237 Specification for Orange Shellac and Other Lacs
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
lac varnish. Each type and grade may be furnished in very 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
light, light, medium, heavy, very heavy, or extra heavy body
varnish
varnish, as specified.
Extra heavy body (8-lb (3.6-kg) cut) 51.0 50.5
varnish
4. Color
NOTE 2—The term “cut” is defined as the number of pounds of dry lac
4.1 The color of shellac varnish shall be no darker than the
resin (containing only that amount of moisture acceptable for proper
color of a standard varnish of the same nonvolatile matter
cutting with the solvent to ensure a satisfactory varnish) that were added
content mutually agreed upon between the purchaser and the to 1 gal (3.8 L) of specified solvent in manufacturing the varnish.
Allowance has, therefore, been made for 2 % maximum moisture and
seller.
other volatile matter and 3 % insoluble matter in orange shellac, and for
NOTE 1—Attention is called to the fact that the purchaser and the seller
6 % moisture and other volatile matter in bleached lac, in arriving at a
must agree upon one of the two methods for determining
...