BS 3722:1964
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for machine-made shellac
Hardcopy , PDF
15-08-1997
English
28-06-1991
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Foreword
Specification
Mandatory clauses
1 Scope and description
2 Sample
3 Appearance and colour
4 Colour index
5 Wax
6 Matter insoluble in hot alcohol
7 Orpiment
8 Rosin
9 Expression of analytical results
Optional clauses
10 Volatile matter
11 Non-volatile matter soluble in cold alcohol
12 Clarity of cold alcoholic solution
13 Ash
14 Grit
15 Flow
16 Life under heat
17 Water-soluble acidity or alkalinity
18 Acid value
19 Iodine value
20 Arsenic
21 Lead
22 Adhesion to mica
Appendices
A Sampling
B Method for the determination of colour index
C Methods for the determination of wax
D Method for the determination of matter insoluble in
hot alcohol
E Method for the detection of orpiment
F Method for the detection of rosin (Halphen-Hicks)
G Method for the determination of volatile matter
H Method for the determination of non-volatile matter
soluble in cold alcohol
I Method of test for clarity of cold alcoholic
solution
J Method for the determination of ash
K Method for the determination of grit
L Method of conditioning for the determination of flow
and life under heat
M Method for the determination of flow
N Method for the determination of life under heat
O Method of test for water-soluble acidity or
alkalinity
P Method for the determination of acid value
Q Methods for the determination of iodine value
R Method for the determination of arsenic
S Methods for the determination of lead
T Method for the determination of adhesion to mica
Specifies four main types of machine-made shellac based on different methods of manufacture. Each of the types is graded on the basis of colour. Requirements for scope and description, appearance and colour, colour index, wax, matter insoluble in hot alcohol, orpiment, rosin and the method for expressing the analytical results are given. In addition, optional requirements for different users for volatile matter, non-volatile matter soluble in cold alcohol, clarity of cold alcoholic solution (types III and IV only), ash, grit, flow, life under heat, water-soluble acidity or alkalinity, acid value, iodine value, arsenic, lead and adhesion to mica are also given. The relevant methods of test are given in the appendices.
| Committee |
STI/10
|
| DevelopmentNote |
Supersedes BS 954(1941) (07/2005)
|
| DocumentType |
Standard
|
| Pages |
44
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| UNE-EN 60728-4:2008 | Identical |
| BS 1336:1971 | Specification for knotting |
| DEFSTAN 68-193/1(1993) : 1993 | SHELLAC, FLAKE, NATURAL, LF QUALITY |
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