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ASTM D1720-96(2000)

(Test Method)

Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions

Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions

SCOPE
1.1 This test method covers the determination of the volume ratio of hydrocarbon diluent to active solvent required to cause persistent heterogeneity (precipitation) in a solution of cellulose nitrate.  
1.2 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. For specific hazard statements, see Section 6.
1.3 For hazard information and guidance, see the supplier's Material Safety Data Sheet.

General Information

Status
Historical
Publication Date
31-Dec-1999
ICS
87.060.30 - Solvents
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.35 - Solvents, Plasticizers, and Chemical Intermediates
Current Stage
Ref Project

Relations

Replaces
ASTM D1720-96 - Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions
Effective Date
01-Jan-2000
Replaced By
ASTM D1720-03 - Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions
Effective Date
01-Dec-2003
Referred By
ASTM D268-22 - Standard Guide for Sampling and Testing Volatile Solvents and Chemical Intermediates for Use in Paint and Related Coatings and Material
Effective Date
01-Jan-2000

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ASTM D1720-96(2000) - Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate SolutionsASTM D1720-96(2000) - Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions
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ASTM D1720-96(2000) - Standard Test Method for Dilution Ratio of Active Solvents in Cellulose Nitrate Solutions
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 1720 – 96 (Reapproved 2000)
Standard Test Method for
Dilution Ratio of Active Solvents in Cellulose Nitrate
1
Solutions
This standard is issued under the fixed designation D 1720; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the volume 4.1 By use of standard or reference grade materials for any
ratio of hydrocarbon diluent to active solvent required to cause two of the three components, namely, oxygenated solvent,
persistent heterogeneity (precipitation) in a solution of cellu- diluent, or cellulose nitrate, the effect of different batches or
lose nitrate. different types of the third component can be determined.
1.2 This standard does not purport to address all of the 4.2 This test method is applicable for the determination of
safety concerns, if any, associated with its use. It is the the following:
responsibility of the user of this standard to establish appro- 4.2.1 The dilution ratio of toluene as the standard diluent to
priate safety and health practices and determine the applica- an oxygenated solvent under test, using as the solute standard
bility of regulatory limitations prior to use. For specific hazard cellulose nitrate as defined in 5.2.
statements, see Section 6. 4.2.2 The dilution ratio of a hydrocarbon diluent under test
1.3 For hazard information and guidance, see the supplier’s to n-butyl acetate as the standard solvent, using as a solute
Material Safety Data Sheet. standard cellulose nitrate as defined in 5.2.
4.2.3 The dilution ratio of toluene, as the standard diluent, to
2. Referenced Documents
n-butyl acetate as the standard solvent, using as the solute
2.1 ASTM Standards: cellulose nitrate of varying solubility characteristics.
2
D 301 Test Methods for Soluble Cellulose Nitrate
3
5. Materials
D 841 Specification for Nitration Grade Toluene
3
D 4615 Specification for n-Butyl Acetate (All Grades) 5.1 n-Butyl Acetate (90 to 92 %), conforming to Specifi-
cation D 4615.
3. Terminology
NOTE 2—This grade of n-butyl acetate contains 8 to 10 % n-butyl
3.1 Definitions of Terms Specific to This Standard:
alcohol.
3.1.1 dilution ratio—the maximum number of unit volumes
5.2 Cellulose Nitrate, conforming to the Sampling section
of a diluent that can be added to a unit volume of solvent to
(Appearance, Ash, and Stability requirements) of Test Methods
cause the first persistent heterogeneity (precipitation) in the
D 301 and of such quality that, when used in determining the
solution at a concentration of 8 g cellulose nitrate per 100 mL
toluene dilution ratios of n-butyl acetate and methyl n-propyl
of combined solvent plus diluent and at a temperature of 25 6
ketone, it will give results between the following limits:
3°C.
Toluene Dilution Ratio
NOTE 1—The dilution ratio decreases as the cellulose nitrate concen-
n-butyl acetate 2.73 to 2.83
tration at the end point increases. It is, therefore, necessary to set an
methyl n-propyl ketone 3.80 to 3.90
arbitrary concentration of cellulose nitrate as part of the dilution ratio
term. For this purpose 8.0 g of cellulose nitrate per 100 mL of solvent plus
5.3 Toluene (Toluol), conforming to Specification D 841.
diluent has been adopted.
6. Hazards
6.1 Soluble cellulose nitrate is a flammable material, the
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
degree of flammability varying with the extent and nature of
and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
the wetting medium. Cellulose nitrate is always wet with water
Current edition approved Nov. 10, 1996. Published January 1997. Originally
or alcohol in commercial handling, shipping, and storage, in
published as D 1720 – 60 T. Last previous edition D 1720 – 93.
2 which condition it presents no unusual hazard. Dry cellulose
Annual Book of ASTM Standards, Vol 06.03.
3
Annual Book of ASTM Standards, Vol 06.04. nitrate, if ignited by fire, spark, or static electricity, burns very
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D 1720
TABLE 1 Volume of Solvent Required to Dissolve Cellulose
rapidly. Do not store samples of dry cellulose nitrate at any
Nitrate
time. Dry only that portion required for immediate test. Wear a
Probable Dilution Ratio, volume of mL of Solven
...

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Standard Test Method for Acetone, Methyl Acetate, and Parachlorobenzotrifluoride Content of Paints, and Coatings by Solid Phase Microextraction-Gas Chromatography

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1.1 This test method is for the determination of acetone, methyl acetate, or parachlorobenzotrifluoride (PCBTF), or combination of any of the three, in paints and coatings, by solid phase microextraction (SPME) headspace sampling, and subsequent injection into a gas chromatograph. It has been evaluated for cellulose nitrate, acrylic, and urethane solvent-borne systems. The established working range of this test method is: acetone, 28 to 90 %; methyl acetate, 12 to 22 %; parachlorobenzotrifluoride, 10 to 17 %. There is no reason to believe that it will not work outside these ranges. A minor modification of this test method would make it suitable for the analysis of the same analytes in water-borne coatings (see Note 1).
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