ASTM D365-01(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D365–01(Reapproved2005)
Standard Guide for
Soluble Nitrocellulose Base Solutions
This standard is issued under the fixed designation D365; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope CONSISTENCY (VISCOSITY)
1.1 This guide covers the testing of soluble nitrocellulose
5. Consistency Tests
base solutions that are made by dispersing various kinds and
5.1 For Consistencies from 3 to 500 s—Determine the
concentrations of soluble nitrocellulose (cellulose nitrate) in
consistency by falling-ball consistency test described in Test
various solvent mixtures.
Methods D301 for those solutions having a consistency from 3
1.2 The values stated in SI units are to be regarded as the
to 500 s when tested in that apparatus.
standard. The values given in parentheses are for information
5.2 For Consistencies Less than 3 s—Determine the con-
only.
sistency by Test Method D1200 for those solutions having a
1.3 This standard does not purport to address all of the
consistency of less than 3 s when tested in the falling-ball
safety concerns, if any, associated with its use. It is the
apparatus referred to in 5.1.
responsibility of the user of this standard to establish appro-
5.3 For Consistencies over 500 s—Determine the consis-
priate safety and health practices and determine the applica-
tency using the apparatus and procedure described in Sections
bility of regulatory limitations prior to use. For specific hazard
6 and 7 for those solutions having a consistency greater than
statements see Section 11.
500 s when tested in the falling-ball apparatus referred to in
2. Referenced Documents 5.1.
2.1 ASTM Standards:
6. Apparatus
D301 Test Methods for Soluble Cellulose Nitrate
6.1 The consistency test apparatus, shown in Fig. 1, shall
D333 Guide for Clear and Pigmented Lacquers
consist of the following:
D1193 Specification for Reagent Water
6.1.1 Glass Tube (preferably heat-resistant glass), 50 6
D1200 Test Method for Viscosity by Ford Viscosity Cup
1.5 mm (2 6 ⁄32 in.) in inside diameter and 255 mm (10 in.)
E300 Practice for Sampling Industrial Chemicals
in length, with marks 177 61mm(5 6 ⁄16 in.) apart, the
3. Significance and Use upper one being 75 mm (3 in.) from the top of the tube.
3.1 Since the desired specifications and compositions of
NOTE 1—The steel ball can be removed (in order to leave the same
soluble nitrocellulose base solutions vary greatly, these meth- material in the tube for a check run) by removing the lower stopper.
However, a small air bubble is usually introduced in this way. It is
ods are used to establish whether limits that shall be as agreed
preferable to invert the tube, removing the guide to get the ball out. It is
upon between the producer and the user have been met.
often necessary to put a few drops of solvent in the guide lip to loosen it
from the tube on account of the solution drying at the edge of the tube.
4. Sampling
When the latter method is used for removing the ball, a larger bubble
4.1 Select the sampling method from those listed in Practice
traverses the tube than when the former method is used, but a large bubble
E300.
movessufficientlyfast,eveninaveryviscoussolution,toescapeatthetop
in a few minutes, whereas small bubbles take hours to escape.
6.1.2 Steel Ball, 15.88 6 0.02 mm (0.625 6 0.001 in.) in
This guide is under the jurisdiction of ASTM Committee D01 on Paint and
diameter, and weighing 16.536 6 0.10 g.
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.55 on Factory Applied Coatings on Preformed Products.
6.1.3 Aluminum Guide Cone of light gage aluminum (ap-
Current edition approved May 15, 2005. Published August 2005. Originally
proximately 0.5 mm (0.02 in.) in thickness) as shown in Fig. 1.
approved in 1933. Last previous edition approved in 2001 as D365 – 01. DOI:
The orifice of the guide cone shall be 22 mm ( ⁄8 in.) in
10.1520/D0365-01R05.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or diameter, the conical portion 25 mm (1 in.) in height, the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Borosilicate glass is satisfactory for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D365–01 (2005)
NONVOLATILE MATTER
8. Procedure
8.1 Determine the percent of nonvolatile matter in accor-
dance with the procedure described in the Nonvolatile Matter
section of Test Methods D333.
APPEARANCE OF SOLUTION
9. Procedure
9.1 Compare the appearance of the soluble nitrocellulose
base solution with a reference standard agreed upon between
the purchaser and the seller (both the reference standard and
sample solutions shall be thoroughly agitated before making
observations) in similar bottles for turbidity, hair, grain, and
insoluble matter.
DEPTH OF COLOR
10. Apparatus
FIG. 1 Apparatus for Consistency (Viscosity) Test of Solutions
Having Consistencies over 500 s
10.1 The apparatus used for the preparation of the color
standards and for the depth of color determinations shall
consist of the following:
10.1.1 Light—Source of transmitted light.
cylindrical portion 12.7 mm ( ⁄2 in.) in height, and the outside
diameter shall be slightly under 50 mm (2 in.) so as to fit
NOTE 2—Not absolutely necessary but will increase accuracy and be
snugly into the viscosity tube.
more convenient.
6.1.4 Stoppers, made preferably of rubber and covered with
10.1.2 Bottles,threedozen60m(2-ozL)screw-cap,square,
tin foil.
glass.
10.1.3 Flasks, several, 1-L, volumetric.
7. Procedure
10.1.4 Burets, two, 50-mL.
7.1 Fill the tube in any convenient manner whereby bubbles 10.1.5 Analytical Balance.
do not form and no appreciable amount of solvent is lost. One
10.1.6 ColorimeterDubosq colorimeter (see Note 2).
method is to immerse the lower end of the open tube in the 10.1.7 Color Glass—Yellow glass about 25 mm square and
solution and to apply suction at the upper end of the tube. In
10 mm thick.
this manner the tube can be filled in from 5 to 10 s without the
introduction of air bubbles or an appreciable loss of solvent. 11. Reagents and Materials
Close the bottom of the tube with a stopper covered with tin
11.1 Purity of Reagents—Reagent grade chemicals shall be
foil. Push the aluminum guide cone slowly into the top of the
used in all tests. Unless otherwise indicated, it is intended that
tubeandinsertastoppercoveredwithtinfoilintothetopofthe
all reagents shall conform to the specifications of the Commit-
guide.
tee onAnalytical Reagents of theAmerican Chemical Society,
7.2 Bring the tube and its contents to a temperature of 25 6
where such specifications are available. Other grades may be
0.1°C by placing in a suitable bath. Allow at least 30 min for
used, provided it is first ascertained that the reagent is of
the solution to reach temperature equilibrium. For accurate
sufficiently high purity to permit its use without lessening the
measurements keep the tube during the determina
...