Standard Test Method for Determination of the Nonvolatile Content in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments

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1.1 This test method describes a procedure for the determination of the nonvolatile content (Ns) of silanes, siloxanes, and blended silane-siloxane materials used in masonry water repellent treatments and is applicable to both solvent- and water-borne materials.
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 health and safety practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 7.

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Publication Date
14-Sep-1991
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ASTM D5095-91(2002) - Standard Test Method for Determination of the Nonvolatile Content in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5095–91(Reapproved 2002)
Standard Test Method for
Determination of the Nonvolatile Content in Silanes,
Siloxanes and Silane-Siloxane Blends Used in Masonry
Water Repellent Treatments
This standard is issued under the fixed designation D 5095; 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 used for the purpose of calculating the volatile organic com-
pound (VOC) content of these materials under specified test
1.1 This test method describes a procedure for the determi-
conditions.
nation of the nonvolatile content (N ) of silanes, siloxanes, and
s
blended silane-siloxane materials used in masonry water repel-
5. Apparatus
lent treatments and is applicable to both solvent- and water-
5.1 AluminumDishes,58-mmdiameterby18-mmhighwith
borne materials.
a smooth (planar) bottom surface. Precondition the dishes for
1.2 This standard does not purport to address all of the
30 min in an oven at 110 65°C and store in a desiccator prior
safety concerns, if any, associated with its use. It is the
to use.
responsibility of the user of this standard to establish appro-
5.2 ForcedDraftOven,TypeIIAorTypeIIBasspecifiedby
priate health and safety practices and determine the applica-
Specification E 145.
bility of regulatory limitations prior to use. For a specific
5.3 Syringes, 1-mL and 5-mL.
hazard statement, see Section 7.
5.4 Analytical Balance, capable of weighing to 0.1 mg.
2. Referenced Documents
6. Reagents
2.1 ASTM Standards:
2 6.1 PurityofWater—Unless otherwise indicated, references
D 1193 Specification for Reagent Water
to water shall be understood to mean reagent water as defined
D 3980 Practice for Interlaboratory Testing of Paint and
3 by Type IV of Specification D 1193.
Related Materials
6.2 p-Toluenesulfonic Acid, monohydrate.
E 145 Specification for Gravity-Convection and Forced-
4 6.3 Alcohol, technical grade ethanol or isopropanol.
Ventilation Ovens
7. Hazards
3. Summary of Test Method
7.1 In addition to other precautions, provide adequate ven-
3.1 A designated quantity of test material is weighed into a
tilation, consistent with accepted laboratory practice, to limit
preweighed aluminum dish containing the catalyst solution,
the accumulation of solvent vapors.
mixed, allowed to stand for 60 min at room temperature, and
then heated in an oven at 110 65°C for 60 min. The
8. Procedure
nonvolatile content of the test material is calculated by
8.1 Catalyst Solution—Prepare a catalyst solution contain-
subtracting the solids of the catalyst solution from the total
ing a mixture of 0.5 % p-Toluenesulfonic acid in either ethanol
solids by weight of the test solution.
or isopropanol.Thoroughly mix the solution. Prepare sufficient
catalyst solution to perform all tests.
4. Significance and Use
8.1.1 The nonvolatile content of the test material can be
4.1 This test method is used to determine the nonvolatile
calculated only if the same catalyst solution is used throughout
content of silanes, siloxanes, and silane-siloxane blended
the test. Each time a new batch of catalyst solution is used, its
materials used in masonry water-repellent treatments. It can be
nonvolatile content must be determined.
8.2 Determine the nonvolatile matter, in triplicate, of the
This test method is under the jurisdiction of ASTM Committee D01 on Paint catalyst solution as follows:
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.47 on Masonry Treatments.
Current edition approved Sept. 15, 1991. Published November 1991. Originally The sole source of supply of the solution of p–Toluenesulfonic acid known to
published as D 5095 – 90. Last previous edition D 5095 – 90. the committee at this time is King Industries, Science Road, Norwalk, CT 06852. If
Annual Book of ASTM Standards, Vol 11.01. you are aware of alternative suppliers, please provide this information to ASTM
Discontinued; see 1998 Annual Book of ASTM Standards, Vol 06.01. International Headquarters. Your comments will receive careful consideration at a
4 1
Annual Book of ASTM Standards, Vol 14.04. meeting of the responsible technical committee, which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5095
8.2.1 Weighanaluminumdishto0.1mg.Recordtheweight
W = weight of dish plus catalyst solution after heating, g,
as W .
1 and
8.2.2 Using a 5-mL syringe, weigh 3 61.0 g, to 0.1 mg, by
W = weight of catalyst solution before heating, g.
difference, of the catalyst solution into the preweighed alumi-
9.2 Calculate the nonvolatile content, N , in the test speci-
s
num dish. Record the weight of catalyst solution as W .
3 men as follows:
8.2.3 Heat the aluminum dish containing the catalyst solu-
@~W 2W ! 2
...

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