ASTM D 784 Standard Specification for Orange Shellac and Other Indian Lacs for Electrical Insulation
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ASTM D 784 Document Information:
Title
Standard Specification for Orange Shellac and Other Indian Lacs for Electrical Insulation
ASTM International
Publication Date:
May 1, 2008
Scope:
This specification covers the requirements and methods of test
for three types and four grades of orange shellac and other lacs,
typically used as bonding agents for mica splittings and
reconstituted mica paper and as coating for other materials, as
follows:
Type I—Orange Flake Shellac, Grades A, B, C, and D,
Type II—Button Lac, and
Type III—Garnet Lac.
Stick-lac and seed-lac are not covered by this
specification.
NOTE 1—ISO Specifications 56–1 and 56–2 cover shellac. However,
the equivalency of the ISO specification to this standard is
unknown. Refer directly to the ISO standards to determine
equivalency.
The values stated in SI units are to be regarded as standard.
The values given in parentheses are mathematical conversions to
inch-pound units that are provided for information only and are not
considered standard.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- bonded mica paper
- bonded mica splittings
- button lac
- garnet lac
- lac
- orange flake shellac
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