IS 1448-58: Methods of test for petroleum and its products, Part 58: Determination of insolubles in greases

8 Pages·1991·0.97 MB·English

by  Bureau of Indian Standards

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IS 1448-58 (1991): Methods of test for petroleum and its
products, Part 58: Determination of insolubles in greases
[PCD 1: Methods of Measurement and Test for Petroleum,
Petroleum Products and Lubricants]
“!ान $ एक न’ भारत का +नम-ण”
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Indian Standard
METHODSOFTESTFORPETROLEUM
ANDITSPRODUCTS
[P:58]
DETERMINATION OF INSOLUBLES IN GREASES
( First Revision )
UDC 2-298-126 : 543.725

@ SIB 1991
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ MARG
WEN IHLED 110002
December 1991 Price Group 1
Methods of Test for Petroleum, Petroleum Products and Lubricants Sectional Committee, PCD I
FOREWORD
This Indian Standard [ P : 58 ] ( First Revision ) was adopted by the Bureau of Indian Standards, after
the draft finalized by the Methods of Test for Petroleum, Petroleum Products and Lubricants Sectional
Committee had been approved by the Petroleum, Coal and Related Products Division Council.
In reporting the results of a test or analysis made in accordance with this standard, if the final value,
observed or calculated, is to be rounded off, it shall be done in accordance with IS 2 : 1968 ‘Rules for
rounding off numerical values ( revised) ‘.
IS 1448 [ P : 58 ] : 1991
Indian Standard
METHODSOFTESTFORPBTROLEUM
ANDITSPRODUCTS
[P:58]
DETERMINATION OF INSOLUBLES IN GREASES
First Revision )
(
1 SCOPE 4.3 Rectified Spirit
1.1 The method prescribed is intended for the 95 percent by volume ( see IS 323 : 1959 ).
determination of insolubles in conventional
greases which consist essentially of mineral oil 5 PROCEDURE
and soap. The method is not applicable to
5.1 Weigh into a conical flask a suitable quantity
greases containing non-soap thickeners which are
( 8 to 30 g ) of the material, accurately to the
not broken by dilute mineral acids.
nearest 0.1 g, spread the grease sample uniformly
2 REFERENCES on the sides of the flask for better dispersion and
decomposition. Add 50 ml of petroleum hydro-
2.1 The following Indian Standards are necessary
carbon solvent. Add 50 ml of dilute hydochloric
adjuncts to this standard:
acid. Fit up the conical flask to a reflux con-
IS No. Title denser and reflux until all soap has decomposed
265 : 1987 Hydrochloric acid ( third reuision ) and the upper petroleum hydrocarbon solvent
layer is clear. Filter the undissolved matter
323 : 1959 Rectified spirit
through a tared Gooch crucible provided with a
1745 : 1978 Petroleum hydrocarbon solvent suitable mat. Wash the conical flask and the
( second revision ) crucible with warm ( 60 to 63°C ) water and
petroleum hydrocarbon solvent and finally wash
3 SIGNIFICANCE AND USE
the crucible with rectified spirit. Dry the crucible
3.1 The method can be used to determine the contents at 120°C and weigh to a constant weight.
insoluble content ( graphite, molybdenum disulp- Cool in a desiccator and weigh.
hide etc ) of lubricating greases. The method is

applicable to conventional s oap base lubricating 6 CALCULATIONS AND REPORTING
greases.
6.1 Calculate the percentage of insolubles as:
4 REAGENTS
100x a
4.1 Dilute Hydrochloric Acid Insolubles, percent = 7
approximately 10-O percent by mass of absolute
hydrochloric acid ( see IS 265 : 1987 ). where
a = weight of the insolubles, and
4.2 Petroleum Hydrocarbon Solvent ( 60/80 )
( see IS 1745: 1978 ). w = weight of the sample taken.
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Amendments hued Since Publicatioo
Amend No. Date of Issue txeT detceffA
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