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ASTM D 1076 : 2015

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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

Available format(s)

Hardcopy , PDF

Superseded date

30-06-2021

Language(s)

English

Published date

15-12-2015

This specification denotes limits on the 4 categories of latex as defined in the scope and defines the test methods to use for the specified properties

1.1This 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 coagulable portion of latex after washing and drying.
(B)It is accepted that KOH numbers for boric acid preserved latices will be higher than normal, equivalent to the amount of boric acid in the latex.
(C)Blue or gray color usually denotes iron contamination caused by improper storage in containers.

Category 1—Centrifuged Hevea natural latex preserved with ammonia only or by formaldehyde followed by ammonia.

Category 2—Creamed Hevea natural latex preserved with ammonia only or by formaldehyde followed by ammonia.

Category 3—Centrifuged Hevea natural latex preserved with low ammonia with other necessary preservatives.

Category 4—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, with other necessary preservatives and stabilizers.

Category 5—Centrifuged Hevea natural latex treated with aluminum hydroxide or by other means, preserved with ammonia only or by formaldehyde followed by ammonia containing less than 0.5 % non-rubber content.

1.2This specification is not necessarily applicable to latices prepared 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.

1.3The 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 – 31

    Volatile Fatty Acids

32 – 36

    Boric Acid

37

    Dry Films

38

    Precision for All Test Methods

39

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

Committee
D 11
DocumentType
Standard
Pages
13
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 3492 : 2016 Standard Specification for Rubber Contraceptives (Male Condoms)
ASTM D 3314 : 2002 : R2017 Standard Test Method for Rubber—Chemical Analysis for Polystyrene Blocks In SBR (Styrene-Butadiene Rubber) and Styrene-Reinforced Latices
ASTM D 3772 : 2015 Standard Specification for Industrial Rubber Finger Cots
ASTM D 1566 : 2019 Standard Terminology Relating to Rubber
ASTM D 1417 : 2016 Standard Test Methods for Rubber Latices—Synthetic
ASTM F 623 : 2019 Standard Performance Specification for Foley Catheter
ASTM D 4004 : 2006 : R2017 Standard Test Methods for Rubber—Determination of Metal Content by Flame Atomic Absorption (AAS) Analysis

ASTM D 5712 : 2015 Standard Test Method for Analysis of Aqueous Extractable Protein in Latex, Natural Rubber, and Elastomeric Products Using the Modified Lowry Method
ASTM D 4483 : 1999 Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon Black Industries
ASTM D 4483 : 2020 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 6499 : 2000 Standard Test Method for the Immunological Measurement of Antigenic Protein in Natural Rubber and its Products
ASTM D 1278 : 1991 : REV A : R2002 Standard Test Methods for Rubber from Natural Sources-Chemical Analysis
ASTM D 4483 : 2005 : REV A Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 1278 : 1991 : REV A : R1997 : EDT 1 Standard Test Methods for Rubber from Natural Sources-Chemical Analysis
ASTM D 5712 : 2005 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D 6499 : 2003 Standard Test Method for the Immunological Measurement of Antigenic Protein in Natural Rubber and its Products
ASTM D 5712 : 1999 Standard Test Method for the Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D 1278 : 1991 : REV A : R2015 Standard Test Methods for Rubber from Natural Sources—Chemical Analysis
ASTM D 5712 : 2010 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D 1278 : 1991 : REV A : R2011 Standard Test Methods for Rubber from Natural Sources—Chemical Analysis
ASTM D 6499 : 2018 Standard Test Method for Immunological Measurement of Antigenic Protein in Hevea Natural Rubber (HNR) and its Products
ASTM D 5712 : 1999 : EDT 1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D 1278 : 1991 : REV A : R2002 : EDT 1 Standard Test Methods for Rubber from Natural Sources-Chemical Analysis
ASTM D 6499 : 2016 Standard Test Method for The Immunological Measurement of Antigenic Protein in Natural Rubber and its Products
ASTM D 4483 : 2005 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 6499 : 2007 Standard Test Method for The Immunological Measurement of Antigenic Protein in Natural Rubber and its Products
ASTM D 6499 : 2012 Standard Test Method for The Immunological Measurement of Antigenic Protein in Natural Rubber and its Products
ASTM D 4483 : 2014 : REV A Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2014 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 1278 : 1991 : REV A : R2007 Standard Test Methods for Rubber from Natural Sources—Chemical Analysis
ASTM D 4483 : 2018 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2005 : REV A : R2011 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 5712 : 2005 : EDT 1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method

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