ASTM D3235-15
(Test Method)Standard Test Method for Solvent Extractables in Petroleum Waxes
Standard Test Method for Solvent Extractables in Petroleum Waxes
SIGNIFICANCE AND USE
4.1 The solvent extractables in a wax may have significant effects on several of its properties such as strength, hardness, flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point, and staining characteristics. Whether these effects are desirable or undesirable depends on the intended use of the wax.
SCOPE
1.1 This test method covers the determination of solvent extractables in petroleum waxes.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 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.
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Designation: D3235 − 15
StandardTest Method for
1
Solvent Extractables in Petroleum Waxes
This standard is issued under the fixed designation D3235; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 5. Apparatus
1.1 This test method covers the determination of solvent 5.1 Filter Stick and Assembly, consisting of a 10mm diam-
extractables in petroleum waxes. etersinteredglassfilterstickof10µmto15µmmaximumpore
diameter as determined by the method in Appendix X1,
1.2 The values stated in SI units are to be regarded as
provided with an air pressure inlet tube and delivery nozzle. It
standard. The values given in parentheses are for information
isprovidedwithaground-glassjointtofita25mmby170mm
only.
test tube. The dimensions for a suitable filtration assembly are
1.3 This standard does not purport to address all of the
shown in Fig. 1.
safety concerns, if any, associated with its use. It is the
NOTE 1—A metallic filter stick may be employed if desired. A filter
responsibility of the user of this standard to establish appro-
3
stick made of stainless steel and having a 12.7mm (0.50in.) disk of
priate safety and health practices and determine the applica-
10nm to 15nm maximum pore diameter, as determined by Test Method
bility of regulatory limitations prior to use.
E128,hasbeenfoundtobesatisfactory.Themetallicapparatusisinserted
into a 25mm by 150mm test tube and held in place by means of a cork.
2. Referenced Documents
5.2 Cooling Bath, consisting of an insulated box with
2
2.1 ASTM Standards:
30mm 6 5mm (1.2in. 6 0.2in.) holes in the center to
E1Specification for ASTM Liquid-in-Glass Thermometers
accommodate any desired number of test tubes. The bath may
E128Test Method for Maximum Pore Diameter and Perme-
be filled with a suitable medium such as kerosine, and may be
ability of Rigid Porous Filters for Laboratory Use
cooled by circulating a refrigerant through coils, or by using
solid carbon dioxide.Asuitable cooling bath to accommodate
3. Summary of Test Method
three test tubes is shown in Fig. 2.
3.1 The sample is dissolved in a mixture consisting of 50
5.3 Dropper Pipet, dispensing device capable of delivering
volume% methyl ethyl ketone and 50 volume% toluene. The
0.5g 6 0.05g of molten wax.
solution is cooled to −32°C (−25°F) to precipitate the wax,
5.4 Transfer Pipet, or equivalent volume dispensing device,
thenfiltered.Thesolventextractablescontentisdeterminedby
capable of delivering 15mL 6 0.06mL.
evaporating the solvent from the filtrate and weighing the
residue. 5.5 Air Pressure Regulator, designed to supply air to the
filtration assembly (8.5) at sufficient pressure to give an even
4. Significance and Use
flow of filtrate. Either a conventional pressure-reducing valve
or a mercury bubbler-type regulator has been found satisfac-
4.1 The solvent extractables in a wax may have significant
tory. The latter type, illustrated in Fig. 3, consists of a 250mL
effects on several of its properties such as strength, hardness,
glass cylinder and a T-tube held in the cylinder by means of a
flexibility,scuffresistance, coefficient of friction, coefficientof
rubber stopper grooved at the sides to permit the escape of
expansion,meltingpoint,andstainingcharacteristics.Whether
excess air. The volume and pressure of the air supplied to the
these effects are desirable or undesirable depends on the
filtrationassemblyisregulatedbythedepthtowhichtheT-tube
intended use of the wax.
is immersed in mercury at the bottom of the cylinder. Absor-
bentcottonplacedinthespaceabovethemercurypreventsthe
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.10.0A on Physical/Chemical Properties.
3
Current edition approved April 1, 2015. Published April 2015. Originally The sole source of supply of a suitable metal filter stick with designated
approved in 1973. Last previous edition approved in 2011 as D3235–06 (2011). porosity G known to the committee at this time is the Pall Trinity Micro Corp.,
DOI: 10.1520/D3235-15. Route281,Cortland,NY13045.AlistofUnitedKingdomsupplierscanbeobtained
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or from Energy Institute, 61 New Cavendish St., London, W1G7AR, United King-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM dom. If you are aware of alternative suppliers, please provide this information to
Standards volume information, refer to the standard’s Document Summary page on ASTM International Headquarters. Your comments will receive c
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3235 − 06 (Reapproved 2011) D3235 − 15
Standard Test Method for
1
Solvent Extractables in Petroleum Waxes
This standard is issued under the fixed designation D3235; 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 Scope*
1.1 This test method covers the determination of solvent extractables in petroleum waxes.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E1 Specification for ASTM Liquid-in-Glass Thermometers
E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use
3. Summary of Test Method
3.1 The sample is dissolved in a mixture consisting of 50 volume % methyl ethyl ketone and 50 volume % toluene. The solution
is cooled to −32°C (−25°F)−32 °C (−25 °F) to precipitate the wax, then filtered. The solvent extractables content is determined by
evaporating the solvent from the filtrate and weighing the residue.
4. Significance and Use
4.1 The solvent extractables in a wax may have significant effects on several of its properties such as strength, hardness,
flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point, and staining characteristics. Whether
these effects are desirable or undesirable depends on the intended use of the wax.
5. Apparatus
5.1 Filter Stick and Assembly, consisting of a 10-mm10 mm diameter sintered glass filter stick of 1010 μm to 15 μm 15 μm
maximum pore diameter as determined by the method in Appendix X1, provided with an air pressure inlet tube and delivery
nozzle. It is provided with a ground-glass joint to fit a 2525 mm by 170-mm170 mm test tube. The dimensions for a suitable
filtration assembly are shown in Fig. 1.
3
NOTE 1—A metallic filter stick may be employed if desired. A filter stick made of stainless steel and having a 12.7-mm (0.50-in.)12.7 mm (0.50 in.)
disk of 1010 nm to 15 nm 15 nm maximum pore diameter, as determined by Test Method E128, has been found to be satisfactory. The metallic apparatus
is inserted into a 2525 mm by 150-mm150 mm test tube and held in place by means of a cork.
5.2 Cooling Bath, consisting of an insulated box with 3030 mm 6 5-mm (1.25 mm (1.2 in. 6 0.2-in.)0.2 in.) holes in the center
to accommodate any desired number of test tubes. The bath may be filled with a suitable medium such as kerosine, and may be
cooled by circulating a refrigerant through coils, or by using solid carbon dioxide. A suitable cooling bath to accommodate three
test tubes is shown in Fig. 2.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.10.0A on Physical/Chemical Properties.
Current edition approved Oct. 1, 2011April 1, 2015. Published October 2011April 2015. Originally approved in 1973. Last previous edition approved in 20062011 as
D3235 - 06.D3235 – 06 (2011). DOI: 10.1520/D3235-06R11.10.1520/D3235-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
3
The sole source of supply of a suitable metal filter stick with designated porosity G known to the committee at this time is the Pall Trinity Micro Corp., Route 281,
Cortland, NY 13045. A list of United Kingdom suppliers can be obtained from Energy Institute, 61 New Cavendish St., London, W1G 7AR, United Kingdom. If you are aware
of alternative suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible
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technical committee, which you may attend.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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