AS 1683.6-1974

1 - AS 1683 METHODS OF TEST FOR RUBBER - FIRST GROUP: METHODS 1, 2, 3, 5, 6 - METRIC UNITS
4 - GENERAL INTRODUCTION
5 - LIST OF METHODS
7 - SCOPE, ARRANGEMENT AND APPLICATION
7 - 1 SCOPE.
7 - 2 ARRANGEMENT.
7 - 3 APPLICATION.
9 - METHOD 1. SAMPLING OF LATEX
9 - 1 SCOPE.
9 - 2 BACKGROUND.
9 - 3 BULK MATERIAL.
9 - 4 PREPARATION OF TEST SAMPLE.
10 - 5 DRUMS.
10 - 5.1 Blending of Content.
10 - 5.1.1 Method A.
10 - 5.1.2 Method B.
10 - 5.2 Removal of Sample.
10 - 6 TANKS AND TANK CARS.
11 - METHOD 2. SOLIDS CONTENT OF LATEX
11 - 1 SCOPE.
11 - 2 BACKGROUND.
11 - 3 PRINCIPLE.
11 - 4 ACCURACY.
11 - 5 APPARATUS.
11 - 6 SAMPLING.
11 - 7 PROCEDURE.
11 - 7.1 Alternative Procedures.
12 - 7.2 Heating at Atmospheric Pressure.
12 - 7.3 Heating at Reduced Pressure.
12 - 8 CALCULATION.
12 - 9 REPORT.
13 - METHOD 3. DRY RUBBER CONTENT OF NATURAL RUBBER LATEX
13 - 1 SCOPE.
13 - 2 PRINCIPLE.
13 - 3 APPARATUS AND REAGENT.
13 - 4 PROCEDURE.
14 - 5 EXPRESSION OF RESULTS.
14 - 6 REPORT.
15 - METHOD 5. COAGULUM CONTENT OF RUBBER LATICES
15 - 1 SCOPE.
15 - 2 BACKGROUND.
15 - 3 DEFINITION.
15 - 4 REAGENTS.
15 - 5 APPARATUS.
15 - 6 SAMPLING.
15 - 7 PROCEDURE.
16 - 8 EXPRESSION OF RESULTS.
16 - 8.1 Natural Rubber Latex.
16 - 8.2 Synthetic Rubber Latex.
16 - 9 REPORT.
17 - METHOD 6. VOLATILE FATTY ACID NUMBER OF NATURAL RUBBER LATEX
17 - 1 SCOPE.
17 - 2 BACKGROUND.
17 - 3 DEFINITION.
17 - 4 PRINCIPLE.
17 - 5 REAGENTS.
17 - 6 APPARATUS.
18 - 7 SAMPLING.
18 - 8 PROCEDURE.
18 - 9 CALCULATION.
19 - 10 REPORT.

This method determines the volatile fatty acid number of natural rubber latex which contains preservative agents and which has been submitted to some type of concentration process. The method is not necessarily suitable for latices from natural sources other than Havea brasiliensis, and is not applicable to compounded latex, latex, vulcanized latex, artificial dispersions of rubber or synthetic rubber latices.

Reconfirmed 1989