ASTM International - ASTM D1076-21

Standard Specification for Rubber—Concentrated, Ammonia Stabilized, Creamed, and Centrifuged Natural Latex

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Organization: ASTM International
Publication Date: 1 June 2021
Status: active
Page Count: 13
ICS Code (Latex and raw rubber): 83.040.10
significance And Use:

4.1Â This specification denotes limits on the 5 categories of latex as defined in the scope and defines the test methods to use for the specified properties. These test methods may be used for... View More

scope:

1.1Â This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories:

Category 1â€"Centrifuged Hevea natural latex stabilized with ammonia only.

Category 2â€"Creamed Hevea natural latex stabilized with ammonia only.

Category 3â€"Centrifuged Hevea natural latex stabilized with low ammonia.

Category 4â€"Centrifuged, or centrifuged and creamed, guayule latex, or other natural rubber latex, containing less than 200 µg total protein per gram dry weight of latex, with ammonia or other hydroxide.

Category 5â€"Centrifuged Hevea natural latex treated with aluminum hydroxide or by other means, stabilized with ammonia only containing less than 0.5 % non-rubber content.

1.2Â This specification is not necessarily applicable to latices prepared, stabilized, or preserved by other methods, and shall not be construed as limiting the desirability or usefulness of other categories of latices. It does apply to natural latex sources other than Hevea brasiliensis but does not apply to compounded latex concentrates.

1.3Â The analytical procedures applicable to the specifications are included and appear in the following order:

 Section
Sampling 6 and 7
Total Solids  8
Dry Rubber Content  9
Protein Content 10
Total Alkalinity 11
Viscosity 12
Sludge Content 13
Coagulum Content 14
KOH Number 15
pH 16
Mechanical Stability 17
Copper and Manganese 18
Density 19 â€" 31
Volatile Fatty Acids 32 â€" 36
Boric Acid 37
Dry Films 38
Precision for All Test Methods 39

1.4Â The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5Â This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

abstract:

This specification establishes the requirements for first grade concentrated natural rubber latex of the following categories: Category 1, centrifuged Hevea natural latex preserved with ammonia... View More

Document History

ASTM D1076-21
June 1, 2021
Standard Specification for Rubber—Concentrated, Ammonia Stabilized, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: Category 1—Centrifuged Hevea natural latex stabilized with...
June 1, 2020
Standard Specification for Rubber—Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: Category 1—Centrifuged Hevea natural latex preserved with...
December 15, 2015
Standard Specification for Rubber—Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: (A) Dry rubber content by definition and use is the acid...
July 1, 2014
Standard Specification for Rubber—Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: (A) Dry rubber content by definition and use is the acid...
October 1, 2010
Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: Category 1 Centrifuged Hevea natural latex preserved with...
June 1, 2006
Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: Category 1-Centrifuged Hevea natural latex preserved with...
August 10, 2002
Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following types: Type 1-Centrifuged natural latex preserved with ammonia only or by...
February 10, 1997
Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following types: Type 1-Centrifuged natural latex preserved with ammonia only or by...
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