ASTM D1342-92(2002)

Standard Test Method for Paraffin-Type Hydrocarbons in Carnauba Wax (Withdrawn 2007)

SCOPE
1.1 This test method covers the determination, by chromatography, of paraffin-type hydrocarbons in carnauba wax.
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.
WITHDRAWN RATIONALE
This test method covers the determination, by chromatography, of paraffin-type hydrocarbons in carnauba wax.
This standard is being withdrawn as it is no longer relevant in the industry, because newer technology is being used.
Formerly under the jurisdiction of Committee D21 on Polishes, this test method was withdrawn in February 2007.

General Information

• Status: Withdrawn
• Publication Date: 14-Aug-1992
• Withdrawal Date: 01-Feb-2007
• ICS: 71.100.99 - Other products of the chemical industry
• Technical Committee: D21 - Polishes
• Drafting Committee: D21.02 - Raw Materials

Relations

• Replaces: ASTM D1342-92(1996) - Standard Test Method for Paraffin-Type Hydrocarbons in Carnauba Wax
• Effective Date: 15-Aug-1992

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1342–92 (Reapproved 2002)
Standard Test Method for
Paraffin-Type Hydrocarbons in Carnauba Wax
This standard is issued under the fixed designation D 1342; 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 5.2 Heptane, technical grade.
1.1 This test method covers the determination, by chroma-
6. Procedure
tography, of paraffin-type hydrocarbons in carnauba wax.
6.1 Place a wad of glass wool in the bottom of the
1.2 This standard does not purport to address all of the
separatory funnel and pour 220 to 225 g of alumina on top of
safety concerns, if any, associated with its use. It is the
this plug. Tap the side of the funnel sharply several times with
responsibility of the user of this standard to establish appro-
the palm of the hand in order to pack the alumina evenly, and
priate safety and health practices and determine the applica-
then cover the adsorbent with a thin layer of glass wool.
bility of regulatory limitations prior to use.
Immediately warm the column by pouring 400 mL of heptane
2. Referenced Documents at its boiling point through the adsorbent with the stopcock
adjusted to permit maximum flow of the solvent. Tap the
2.1 ASTM Standards:
column to remove entrained air. Close the stopcock after the
D 94 Test Method for Saponification Number of Petroleum
2 last of the heptane has been added and while a layer about 10
Products
mm deep still remains above the surface of the alumina.
3. Significance and Use 6.2 Dissolve 4.0 to 4.5 g of the sample, weighed to the
nearest 0.01 g, in 700 mLof boiling heptane in a 1-L, tall-form
3.1 This test method is used to determine the natural or
beaker. Pour the solution quantitatively onto the warm column
added hydrocarbon component of carnauba. It is used for
of alumina. Collect the percolate in a beaker placed under the
quality control or to assess adulteration.
funnel with the stopcock in a position to permit maximum flow
4. Apparatus
through the column. Maintain the temperature of the solution
being added and the column at approximately the boiling point
4.1 Cylindrical Separatory Funnel, 250-mL capacity, hav-
of heptane throughout the course of the addition. The tempera-
ing an open top.
ture of the percolate issuing from the funnel stem shall be at 50
4.2 Analytical Balance, having a sensitivity of 0.1 mg.
to 55°C.After the last of the solution has been added, rinse the
4.3 Electric Hot Plate.
tall-form beaker with two successive 50-mL portions of fresh,
4.4 Electric Oven, capable of maintaining a temperature of
boiling heptane and add the washings to the column. At this
100 6 5°C.
stage a yellow band, which should not extend more than about
5. Reagents
40 mm down from the top of the alumina, will have developed.
Awider band than this probably indicates that the column was
5.1 Alumina, having an activity of II according to the
not packed properly. In such a case it may be difficult to effect
Brockmann classification. Since alumina of an activity of I
a clean separation of the hydrocarbons in one pass through the
according to the classification also has been found to be
alumina.
satisfactory for the separation, any alumina falling in the
6.3 Elute the column with additional heptane at within 5°C
activity range from I to II is suitable for use in this test method.
of its boiling point and, when about 1 L of percolate has been
The alumina must be kept free from moisture to retain its
obtained, begin to test subsequent portions of the percolate for
adsorptive properties.
complete elution of the hydrocarbons. To do this, collect
50-mL portions of the percolate in separate 100-
...