ASTM D5095-91(1997)e1
(Test Method)Standard Test Method for Determination of the Nonvolatile Content in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments
Standard Test Method for Determination of the Nonvolatile Content in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments
SCOPE
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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e1
Designation: D 5095 – 91 (Reapproved 1997)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
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.
e NOTE— Footnote 5 was editorially changed in September 1997.
1. Scope materials used in masonry water-repellent treatments. It can be
used for the purpose of calculating the volatile organic com-
1.1 This test method describes a procedure for the determi-
pound (VOC) content of these materials under specified test
nation of the nonvolatile content (N ) of silanes, siloxanes, and
s
conditions.
blended silane-siloxane materials used in masonry water repel-
lent treatments and is applicable to both solvent- and water-
5. Apparatus
borne materials.
5.1 Aluminum Dishes, 58-mm diameter by 18-mm high with
1.2 This standard does not purport to address all of the
a smooth (planar) bottom surface. Precondition the dishes for
safety concerns, if any, associated with its use. It is the
30 min in an oven at 110 6 5°C and store in a desiccator prior
responsibility of the user of this standard to establish appro-
to use.
priate health and safety practices and determine the applica-
5.2 Forced Draft Oven, Type IIA or Type IIB as specified by
bility of regulatory limitations prior to use. For a specific
Specification E 145.
hazard statement, see Section 7.
5.3 Syringes, 1-mL and 5-mL.
2. Referenced Documents 5.4 Analytical Balance, capable of weighing to 0.1 mg.
2.1 ASTM Standards:
6. Reagents
D 1193 Specification for Reagent Water
6.1 Purity of Water—Unless otherwise indicated, references
D 3980 Practice for Interlaboratory Testing of Paint and
3 to water shall be understood to mean reagent water as defined
Related Materials
by Type IV of Specification D 1193.
E 145 Specification for Gravity-Convection and Forced-
4 6.2 p-Toluenesulfonic Acid, monohydrate.
Ventilation Ovens
6.3 Alcohol, technical grade ethanol or isopropanol.
3. Summary of Test Method
7. Hazards
3.1 A designated quantity of test material is weighed into a
7.1 In addition to other precautions, provide adequate ven-
preweighed aluminum dish containing the catalyst solution,
tilation, consistent with accepted laboratory practice, to limit
mixed, allowed to stand for 60 min at room temperature, and
the accumulation of solvent vapors.
then heated in an oven at 1106 5°C for 60 min. The
nonvolatile content of the test material is calculated by
8. Procedure
subtracting the solids of the catalyst solution from the total
8.1 Catalyst Solution—Prepare a catalyst solution contain-
solids by weight of the test solution.
ing a mixture of 0.5 % p-Toluenesulfonic acid in either ethanol
or isopropanol. Thoroughly mix the solution. Prepare sufficient
4. Significance and Use
catalyst solution to perform all tests.
4.1 This test method is used to determine the nonvolatile
8.1.1 The nonvolatile content of the test material can be
content of silanes, siloxanes, and silane-siloxane blended
calculated only if the same catalyst solution is used throughout
the test. Each time a new batch of catalyst solution is used, its
nonvolatile content must be determined.
This test method is under the jurisdiction of ASTM Committee D-1 on Paint
and Related Coatings, Materials, and Applications 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
Annual Book of ASTM Standards, Vol 06.01. Headquarters. Your comments will receive careful consideration at a meeting of the
4 1
Annual Book of ASTM Standards, Vol 14.02. responsible technical committee, which you may attend.
D 5095
8.2 Determine the nonvolatile matter, in triplicate, of the
W 5 weight of aluminum dish, g,
catalyst solution as follows:
W 5 weight of dish plus catalyst solution after heating, g,
8.2.1 Weigh an aluminum dish to 0.1 mg. Record the weight
and
as W . W 5 weight of catalyst solution before heating, g.
8.2.2 Using a 5-mL syringe, weigh 3 6 1.0 g, to 0.1 mg, by
9.2 Calculate the nonvolatile content, N , in the test speci-
s
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