ASTM D1258-95(1999)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1258–95(Reapproved1999)
Standard Test Methods for
,
1 2
High-Gravity Glycerin
This standard is issued under the fixed designation D 1258; 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.
1. Scope 5. Procedure
1.1 These test methods cover the procedures for the sam- 5.1 Apparent Specific Gravity—Determinetheapparentspe-
pling and testing of glycerin (1,2,3-propanetriol) for use in the cificgravitybyapycnometermethodthatisaccurateto0.0002,
manufacture of alkyd resins and other synthetic resins. such as in Test Methods D 891 or D 4052.
1.2 This standard does not purport to address all of the 5.2 Color—Determine the color in accordance with Test
safety concerns, if any, associated with its use. It is the Method D 1209.
responsibility of the user of this standard to establish appro- 5.3 Sulfate Ash—Weigh to the nearest 0.001 g, 50 g of
priate safety and health practices and determine the applica- glycerin sample, into an open, shallow dish of porcelain,
bility of regulatory limitations prior to use. platinum, or other suitable material. Heat the dish carefully
1.3 For hazard information and guidance, see the supplier’s until the contents can be ignited with a flame and allow it to
Material Safety Data Sheet. burn without further application of heat in a place free of
drafts. When burning ceases, allow the dish to cool to room
2. Referenced Documents
temperature and then moisten the residue with 0.5 mL of
2.1 ASTM Standards: concentrated sulfuric acid. Cautiously heat the dish until fumes
D 891 Test Methods for Specific Gravity, Apparent, of
are no longer evolved and the carbon is completely consumed.
Liquid Industrial Chemicals Ignite, cool in a desiccator, and weigh to 1 mg. Repeat until
D 1209 Test Method for Color of Clear Liquids (Platinum-
weight is constant within 1 mg. Calculate the percent of sulfate
Cobalt Scale) ash, A, as follows:
D 1613 Test Method for Acidity in Volatile Solvents and
A 5 ~R/S! 3 100 (1)
Chemical Intermediates Used in Paint, Varnish, Lacquer
and Related Products where:
D 4052 Test Method for Density and Relative Density of R = sulfate ash, g, and
S = specimen used, g.
Liquids by Digital Density Meter
E 300 Practice for Sampling Industrial Chemicals
NOTE 1—The sulfate ash procedure is equivalent to the “Residue on
Ignition” determination for glycerin in the Pharmacopeia of the United
3. Significance and Use
States, nineteenth revision.
3.1
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