BS 3722:1964

Superseded

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Specification for machine-made shellac

Available format(s)

Hardcopy , PDF

Superseded date

15-08-1997

Language(s)

English

Published date

28-06-1991

Publisher

British Standards Institution

Co-operating organizations
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	BS 7897-2:1997
Supersedes	BS 954:1941 BS 954(1941) : LATEST

BS 1336:1971	Specification for knotting
DEFSTAN 68-193/1(1993) : 1993	SHELLAC, FLAKE, NATURAL, LF QUALITY

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BS 3722:1964

Specification for machine-made shellac

Table of Contents

Abstract

General Product Information

Standards Referenced By This Book

Category

Subcategory