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IS : 159 - 1981
(Reaffirmed 2009)
Indian Standard (Reaffirmed 2014)
(Reaffirmed 2019)
SPECIFICATION FOR
READY MIXED PAINT, BRUSHING,
ACID RESISTING
(First Revision)
First Reprint JUNE 1991
( Incorporating Amendment No.1)
UDC 667 . 633 : 667.634 . 2:667 . 637.237.3
© Copyright 1991
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
Gr3 March 1982
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IS 159 -1981
Indian Standard
SPECIFICATION FOR
READY MIXED PAINT, BRUSHING,
ACID RESISTING
( First Revision )
Paints and Allied Products Sectional Committee, CDC 8
Chairman Representing
SHRI K. N. R. SHARMA Directorate General of Technical Development,
New Delhi
Members
SHRI R. D. KA W A TRA (A/temale to
Shri K. N. R. Sharma)
SHRI BALJIT SINGH Bhagsons Paint Industries (India), New Delhi
SHRI HARDIP SINGH (Allernale)
SHRI K. M. BANERJEE National Test House, Calcutta
SHRI V. M. BAVDEKAR Asian Paints ( India) Ltd, Bombay
DR P. K. BHANDARI Shalimar Paints Ltd, Calcutta
SHRI S. BHATTACHARYYA Alkali & Chemical Corporation ofIndia Ltd, Rishra
( West Bengal)
SHRI G. N. TIWARI (A/female)
SHRI N. S. BIRDIE Shri Ram Test House, Delhi
SHRI C. P. SHARDA (Allernale)
SHRI S. K. BOSE Directorate General of Supplies and Disposals
( Inspection Wing ), New Delhi
SHRI D. S. CHOWDHURY (A/femate )
DR S. CHANDRA Oil Technologists' Association of India , Kanpur
SHRI M. S. SAXENA (Allernale)
SHRI A. S. DHINGRA All India Small Scale Paint and Allied Industries
Association, Bombay
DIRECTOR ( EIC ) Export Insp ection Council of India, Calcutta
SHRI M. M. GHOSH Indian Paint Association, Calcutta
SHRI T. K. S. MANI Addisons Paints and Chemicals Ltd, Madras
SHRI M. B. SATYANARAYANA (Allernale)
SHRI V. MULLOTH Goodlass Nerolac Paints Ltd, Bombay
SHRI S. S. ANKAIKAR ( Allernale )
SHRI M. PHILIP Indian Aluminium Company Ltd, Calcutta
SHRI P. N. PHADKE (A/female)
( Continued on page 2 )
© Copyright 1991
BUREAU OF INDIAN STANDARDS
This publication is protected under the Indian Copyright Act (XIV of 1957) and
reproduction in whole or in part by any means except with written pennission of the
publisher shall be deemed to be an infringement of copyright under the said Act.
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IS : 159 - 1981
(Continuedfrompage I)
Members Representing
SHRI K. S. RAJEEVALOCHANAM Heavy Machine Building Plant, Heavy Engineering
Co Ltd, Ranchi
SHRID.P. MUKHERJEE (Alternate)
SHRI D. RAMAMURTHY Bharat Heavy Electricals Ltd, Hyderabad
SHRI N. D. GUPTA (Alternate I)
SHRI R. C. MISRA ( Alternate II )
DR R. J. RATHI Sudarshan Chemical Industries Ltd, Pune
SHRI K. L. RA THI ( Alternate)
SHRI P. SATYANARAYANA Development Commissioner (Small Scale In-
dustries), New Delhi
DR S. K. KAPOOR (Alternate)
SCIENTIFIC ADVISER TO THE CHIEF Naval Headquarters (Ministry of Defence)
OF THE NAVAL STAFF
DRA. K . SEN Ministry of Defence ( DGI )
SHRI s. K. ASTHANA (Alternate)
SHRI R. R. SEQUERA Garware Paints Ltd, Bombay
DR P. G. CHAUDHARI (Alternate I)
SHRI C. R. THUSE (Alternate II )
SENIOR CHEMlST AND METALLURGIST Railway Board (Ministry of Railways)
ASSTT RESEARCH OFFICER ( Alternate)
DR S. M. SINGH Central Building Research Institute (CSIR),
Roorkee
SHRI R. S. SRJV ASTA VA (Alternate)
DR M. A. SIVASAMBAN Regional Research Laboratory ( CSIR ), Hyderabad
DR M. M. SHIRSALKAR (Alternate)
CAPT V. SUBRAMANlAN The Shipping Corporation of India Ltd, Bombay
CAPT S. K. KHURANA (Alternate)
SHRI V. D. TIWARI Central Public Works Department, New Delhi
SURVEYOR OF WORKS (Alternate)
DR HARI BHAGWAN, Director General, lSI (Ex-officio Member)
Director ( Chem )
Secretaries
SHRI R. K. SlNGH
Deputy Director ( Chem ), lSI
SHRI M. MUKHOPADHYAYA
Deputy Director ( Chem), lSI
Panel for RMP's Enamels and Adjuncts, CDC 8:6:6
Convener
DR P. K. BHANDARI Shalimar Paints Ltd, Ca lcutta
Members
SHRI K. M. BANERJEE National Test House, Calcutta
SHRI R. D. BHATIA Kohinoor Paints Pvt Ltd, Amritsar
CHEMIST AND METALLURGIST, Railway Board (Ministry of Railways)
RDSO, LUCKNOW
( Continued on page 9 )
2
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IS : 159 - 1981
Indian Standard
SPECIFICATION FOR
READY MIXED PAINT, BRUSHING,
ACID RESISTING
(First Revision)
o. FOREWORD
0.1 This Indian Standard (First Revision) was adopted by the Indian
Standards Institution on 23 September 1981, after the draft fmalized by
the Paints and Allied Products Sectional Committee had been approved
by the Chemical Division Council.
0.2 This standard was first published in 1950 and was largely based on
the draft prepared by the Coordinating Subcommittee of the No.5 Standing
Committee on Specifications for Paints and Allied Stores of the General
Headquarters, India (now Army Headquarters).
0.3 In this revision, which is based on the suggestions of the Indian Paint
Association, 3-coat application has been specified for testing resistance
to acids and acid fumes and protection against corrosion. This has been
done as paint conforming to this specification will protect the surface
against acids also. Besides, the requirements for covering power and
spreading rate have been dropped; the flash point has been reduced from
35 to 16°C so as to allow the use of sophisticated resins to achieve desired
resistance property; and the use of chlorinated rubber based paint has
been permitted. The title of the standard has also been simplified and
Amendment No. 1 issued in 1963 has been incorporated in this revision.
0.4 The material covered by this standard is used for the protection of
equipment and the interior of laboratories, factories and fume cupboards
exposed to the action of acid fumes.
0.5 This specification covers clause 4.1 which calls for agreement between
the purchaser and the supplier.
0.6 For the purpose of deciding whether a particular requirement of this
standard is complied with, the final value, observed or calculated, expressing
the result of a test or analysis, shall be rounded off in accordance with
IS : 2-1960*. The number of significant places retained in the rounded off
value should be the same as that of the specified value in this standard.
*Rules for rounding off numerical values (revised).
3
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IS : 159 - 1981
1. SCOPE
1.1 This standard prescribes requirements and methods of sampling and
test for the material commercially known as ready mixed paint, brushing,
acid resisting, for protection against acids and acid fumes, colour as required.
2. TERMINOLOGY
2.1 For the purpose of this standard, the definitions given under 2 of
IS : 101-1964* and IS : 1303-1963t shall apply.
3. REQUIREMENTS
3.1 Composition - The material shall be of such a composition as to
satisfy the requirements of this standard.
3.2 Resistance to Acids and Acid Fumes - The material, when tested
as described in Appendix A, shall pass the test.
3.3 The material shall also comply with the requirements given III
Table 1.
4. PACKING AND MARKING
4.1 Packing - Unless otherwise agreed between the purchaser and the
supplier, the paint shall be packed in metal containers conforming to
IS : 1407-1968t or IS : 2552-1970§.
4.2 Marking - Each container shall be marked with the following:
a) Name, thinner used, flash point and class ofthe material;
b) Name of the manufacturer and/or his recognized trade-mark;
if any ;
c) Volume of the material;
d) Batch number or lot number in code or otherwise; and
e) Month and year of manufacture.
*Methods of test for ready mixed paints and enamels ( second revision ).
t Glossary of terms relating to paints (revised).
tSpecification for round p aint tins ( first revision ).
§Specification for steel drum s ( galvanized and ungalvanized ) (first revision ).
4
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IS : 159 - 1981
TABLE 1 REQUIREMENTS FOR READY MIXED PAINT, BRUSHING, ACID
RESISTING
(Clause 3.3)
SL CHARACTERISTIC REQUIREMENT METHOD OF TEST ,
No. REF TO CL No. IN
IS : 101-1964*
(1) (2) (3) (4)
i) Consistency Smooth, uniform and suitable for 7.4
application by brushing without
appreciable drag on the brushes
ii) Drying time:
Hard dry Not more than 8 hours 7.1 and 7.2
iii) Finish Smooth and glossy 7.5
iv) Wet opacity Between - 10 and + 20 percent of 10
the approved sample or the
value declared by the manu-
facturer and accepted by the
competent testing laboratory
v) Colour Close match to the specified IS II
colour, or to the approved sam-
ple where IS colour is not speci-
fied
vi) Fastness to light To pass the test 12
vii) Residue on sieve, percent 0.3 13
by mass , Max
viii) Water content (if water 0.5 14
is suspected to be per-
cent ), percent by mass,
Max
ix) Flexibility and adhesion No visible damage or detachment 16
after 96 h air drying offilm
x) Stripping test Scratches free from jagged edges 17
xi) Scratch hardness No visible scratch as to show the 15
bare metal
xii) Protection against corro- No signs of breakdown or corrosion 18t
sion
xiii) Flash point Not below 16°C 24t
xiv) Keeping properties Not less than one year 31
*Methods of test for ready mixed paints and enamels (second revision).
t On three coat application having dry film thickness between 100 and 125 microns.
tExcept that the temperature of the sample shall be adjusted between 0° and 1°C.
5
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IS : 159 - 1981
4.2.1 The containers may also be marked with the lSI Certification
Mark.
NOTE - The use of the lSI Certification Mark is governed by the provisions
of the Indian Standards Institution (Certification Marks) Act and the Rules
and Regulations made thereunder. Th e lSI Mark on products covered by an
Indian Standard conveys the assurance that they have been produced to comply
with the requirements of that sta ndard under a well-defined system of in spection ,
testing, and quality control which is devised and sup ervi sed by lSI and operated
by the producer. lSI marked products are also continuously checked by lSI for
conformity to that standard as a further safeguard. Details of conditions under
which a licence for th e use of th e lSI Certification Mark may be granted to manu-
facturers or processors, may be obtained from the Indian Standards Institution.
4.3 The containers shall also be marked 'HIGHLY FLAMMABLE
LIQUID' in red letters ( either printed on the label affixed to the container
or lithographed or stencilled thereon with indelible ink) in a type size of
not less than 50 mm. In addition all containers for storage and transport
shall comply with the requirements of latest issues of Red Tariff and re-
quirements as laid down from time to time by the Chief Inspectorate of
Explosives, Government of India, for packing, storage and transit of flam-
mable liquids and the Board of Trade Regulations as applicable thereon
for transport by steamers.
4.4 Other details of packing and marking shall be in accordance with
instructions given by the purchaser.
5. SAMPLING
5.1 Representative samples of the material shall be drawn as prescribed
under 3 of IS : 101-1964*.
5.2 Criteria for Conformity - A lot shall be declared as conforming
to the requirements of this standard if the test results on the composite
sample satisfy the requirements prescribed under 3 of this standard.
6. TEST METHODS
6.1 Tests shall be conducted as prescribed in IS : 101-1964* and
Appendix A. Reference to relevant clauses ofIS : 101-1964* is given in col 4
of Table 1 and reference to Appendix A is given in 3.2.
6.2 Quality of Reagents - Unless specified otherwise, pure chemicals
and distilled water (see IS : 1070-1977t ) shall be employed in tests.
NOTE - 'Pure chemicals' shall mean chemicals that do not contain impurities
which affect the results of analysis.
6.3 For match against Indian Standard colours IS : 5-1978t shall be used.
*Methods of test for ready mixed paints and enamels ( second revision).
t Specification for water for general laboratory use (second revision ).
Colours for ready mixed paints and enamels ( third revision ).
6
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IS : 159 - 1981
APPENDIX A
( Clause 3.2 )
TEST FOR RESISTANCE TO ACIDS AND ACID FUMES
A-O. GENERAL
A-I.I A film of the material when tested as prescribed in this Appendix
shall be satisfactorily resistant to the action of sulphuric acid, nitrating
acid and nitric acid fumes, and in this respect shall not be inferior to the
approved sample when both are tested in the same manner and at the
same time.
A-2. PREPARATION OF PANELS
A-2.1 Prepare three metal panels as prescribed in 5.2 of IS : 101-1964*.
Apply the paint on each side of the panel and allow it to air dry for 24 hours.
Apply two further coats of the material in similar manner and allow the
panel to dry for seven days after the final coat. Coat the edge ofthe painted
panel to a depth of six millimetre alround by dipping in a molten paraffin
wax bath.
A-3. PROCEDURE
A-3.1 Resistance to Sulphuric Acid - Immerse one panel to half the
length in a solution containing 20 g of sulphuric acid (relative density 1.84 )
per 100 ml of water and allow it to stand for 24 hours at room temperature.
Remove the panel, wash it carefully with cold water and allow it to dry
in a vertical position for two hours at room temperature.
A-3.2 Resistance to Nitrating Acid - Immerse the second panel to
half the length in a solution containing the following:
a) Nitric acid ( relative density 1.42 ) 1 volume
b) Sulphuric acid (relative density 1.84 ) 3 volumes
c) Water 16 volumes
Allow it to stand for 24 hours at room temperature. Remove the panel,
wash it carefully with cold water and allow it to dry in a vertical position
for two hours at room temperature.
*Methods oftest for rea dy mixed paints and enamels ( second revision ).
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IS : 159 - 1981
A-3.3 Resistance to Nitric Acid Fumes - Take a spoutless beaker or a
glass jar approximately l30 mm high (internally) with 75 mm internal
diameter. Dip its open end in molten beeswax and withdraw slightly so
that a fIlm of bees wax is formed on the rim of the jar. Cool till the wax
solidifies. Add two millilitre of concentrated nitric acid ( Relative Density
1.42 ) to the j ar and cover the jar with third panel ( half the length of the
panel) as prepared in A-2.t. Place a mass of 1 000 g on top of the panel
and maintain the temperature of the jar at 38°C. Remove the panel after
two hours, wash the exposed paint film immediately with cold water till
free from acid, and allow it to dry in a vertical position for two hours at
room temperature.
A-4. COMPARISON OF FILMS
A-4.1 Compare in all cases the toughness, hardness and adhesion of the
portion of the paint film, which has been in contact with the acids or fumes,
with the rest of the film. It shall not show any blister or wrinkle. Minor
change in colour gloss, toughness, hardness and adhesion shall not be the
cause for rejection.
A-4.2 Remove the strip of the paint film, including a part which has been
in contact with the acids or fumes, with a suitable paint remover and
examine the exposed steel surface for signs of acid attack. The material
shall be taken as passing the requirements of this test, if no attack of acids/
acid fumes on the metal surface is noticed.
8
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IS : 159 - 1981
(Continuedfrompage2 )
Members Representing
SHRI D. S. CHOWDHURY Directorate General of Supplies and Disposals
( Inspection Wing ), New Delhi
SHRI s. K . BASU (Alternate )
SHRI S. S. DHINGRA U. K. Paints Industries , Amritsar
DR A. B. GERSAPPE (Alternate) Indian Paint Association, Calcutta
SHRI S. S. KA T1Y AR Ministry of Defence ( DOl )
SHRI R. S. SENGAR ( Alte rnate)
SHRI T. K. S. MANI Addisons Paints & Chemicals Ltd , Madras
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BUREAU OF INDIAN STANDARDS
Headquarters:
Manak Bhavan, 9 Bahadur Shah Zafar Marg , NEW DELHI 110002
Telephones : 331 01 31 , 331 13 75 Telegrams: Manaksanstha
( Common to all Offices)
Regional Offices: Telephone
Central : Manak Bhavan , 9 Bahadur Shah Zafar Marg , 1331 01 31
NEW DELHI 110002 1..331 13 75
*Eastern : 1114 C. 1. T. Scheme VII M, V. 1. P. Road , 36 24 99
Maniktola , CALCUTTA 700054
Nortnern : SCO 445-446 , Sector 35-C ,
CHANDIGARH 160036
Southern : C . 1. T. Campus , MADRAS 600113
18 43
16 41
2442
{ 41 25 19
IJ
41 29 16
tWestern : Manakalaya , E9 MIDC , Maral , Andheri ( East) , 6 32 92 95
BOMBAY 400093
Branch Offices:
'Pushpak' , Nurmohamed Shaikh Marg , Khanpur, , 2 63 48
AHMADABAD 380001 1 2 63 49
tPeenya Industrial Area 1st Stage , Bangalore Tumkur Road 49 55p8
BANGALORE 560058 49 56p8
Gangotri Complex , 5th Floor, Bhadbhada Road , T . T . Nagar, 6 67 16
BHOPAL 462003
Plot No . 82 / 83 , Lewis Road , BHUBANESHWAR 751002 5 3627
53 / 5 , Ward No . 29 , R.G. Barua Road , 5th Byelane , 3 31 77
GUWAHATI 781003
5-8-56C L. N . Gupta Marg ( Nampally Station Road ), 23 10 83
HYDERABAD 500001
Rl 4 Yudhister Marg , C Scheme , JAIPUR 302005 6 34 71
{ 6 98 32
117 / 418 B Sarvodaya Nagar, KANPUR 208005 21 68 76
{ 21 82 92
Patliputra Industrial Estate , PATNA 800013 6 23 05
T.C. No . 1411421 , University P.O. , Palayam 1621 04
TRIVANDRUM 695035 I.. 6 21 17
Inspection Offices ( With Sale Point ):
Pushpanjali , First Floor, 205-A West High Court Road , 2 51 71
Shankar Nagar Square , NAG PUR 440010
Institution of Engineers ( India) Building, 1332 Shivaji Nagar, 5 24 35
PUNE 411005
*Sales Office in Calcutta is at 5 Chowringhee Approach , P. O. Princep 27 68 00
Street , Calcutta 700072
t Sales Office in Bombay is at Novelty Chamb ers, Grant Road, 89 65 28
Bombay 400007
tSales Office in Bangalore is at Unity Building, Narasimharaja Square , 22 36 71
Bangalore 560002
Reprography Unit, BIS, New Delhi , India
