ASTM D1786-01

Standard Specification for Toluene Diisocyanate

SCOPE
1.1 This specification covers toluene diisocyanate used as an ingredient in the production of polyurethane cellular materials.
Note 1—The properties included in this specification are those required to characterize toluene diisocyanate. Other requirements may become necessary and will be added as the necessary test methods become available.
1.2 The following precautionary caveat pertains only to the test methods portion, Section 6, of this specification:This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 2—There is no equivalent ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.22 - Cellular Materials - Plastics and Elastomers

Relations

• Replaces: ASTM D1786-96 - Standard Specification for Toluene Diisocyanate
• Effective Date: 10-Nov-2001
• Replaced By: ASTM D1786-01(2006)e1 - Standard Specification for Toluene Diisocyanate
• Effective Date: 15-Mar-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: D 1786 – 01
Standard Specification for
1
Toluene Diisocyanate
This standard is issued under the fixed designation D 1786; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
5
1. Scope 49 CFR Transportation Part 172.01
1.1 This specification covers toluene diisocyanate used as
3. Terminology
an ingredient in the production of polyurethane cellular mate-
3.1 Definitions—For definitions of terms used in this speci-
rials.
fication, see Terminology D 883.
NOTE 1—The properties included in this specification are those re-
quired to characterize toluene diisocyanate. Other requirements may
4. Classification
becomenecessaryandwillbeaddedasthenecessarytestmethodsbecome
4.1 This specification covers three classes of toluene diiso-
available.
cyanates, based on isomer ratio, and three types based on
1.2 The following precautionary caveat pertains only to the
acidity and hydrolyzable chloride.
test methods portion, Section 6, of this specification: This
4.2 Each class may be subdivided into three types on the
standard does not purport to address all of the safety concerns,
basis of acidity differences as follows:
if any, associated with its use. It is the responsibility of the user
4.2.1 TypeIor A—Acidity shall be between 0.0015 and
of this standard to establish appropriate safety and health
0.0045 determined as percent HCl. Hydrolyzable chloride shall
practices and determine the applicability of regulatory limita-
be less than 0.01 %.
tions prior to use.
4.2.2 Type II or B—Acidity shall be between 0.0070 and
0.012 as percent HCl. Hydrolyzable chloride shall be less than
NOTE 2—There is no equivalent ISO standard.
0.015 %.
2. Referenced Documents
4.2.3 Type III or C—Acidity shall be greater than 0.012 as
percent HCl. Hydrolyzable chloride limits may be set at the
2.1 ASTM Standards:
2
D 883 Terminology Relating to Plastics convenience of the supplier and purchaser.
D 4660 Test Methods for Polyurethane Raw Materials:
3 5. Requirements
Determination of Isomer Content of Isocyanates
5.1 These materials shall conform to the requirements
D 4661 Test Methods for Polyurethane Raw Materials:
3
prescribed in Table 1.
Determination of Total Chlorine in Isocyanates
D 4663 Test Method for Polyurethane Raw Materials: De-
6. Sampling and Test Methods
3
termination of Hydrolyzable Chloride of Isocyanates
6.1 The materials shall be sampled and tested in accordance
D 4667 Test Method for Polyurethane Raw Materials: De-
4
with Test Methods D 4660, D 4661, D 4663, D 4667, D 4877,
termination of Acidity in Toluene Diisocyanate
and D 5155.
D 4877 Test Methods for Polyurethane Raw Materials:
3
Determination of APHA Color in Isocyanates
7. Retest and Rejection
D 5155 Test Method for Polyurethane Raw Materials: De-
7.1 If any failure occurs, the material may be retested to
termination of the Isocyanate Content of Aromatic Isocy-
3
establish conformity in accordance with agreement between
anates
the purchaser and the seller.
2.2 Federal Standard:
8. Packaging and Package Marking
1
This specification is under the jurisdiction of ASTM Committee D20 on
8.1 Packag
...