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Polyol

Polyol, Total:199 items.

In the international standard classification, Polyol involves: Raw materials for rubber and plastics, Plastics, Organic chemicals, Rubber and plastics products, Water quality, Products of the chemical industry, Analytical chemistry, Aerospace fluid systems and components, Hydraulic fluids, Materials for aerospace construction, Test conditions and procedures in general, Cellular materials, Paint ingredients.

GM North America, Polyol

GM 9986007-1993 SRIM, Polyol
GM 9986011-1995 SRIM - Polyol
GM 9986012-1995 SRIM - Polyol
GM 9982028-1983 Polyurethane Polyol
GM 9986013-1995 Foamed Polyol, Flexible
GM 9986006-1993 Polyol, Hydroxyl Number<50
GM 9982228-1996 Polyurethane Acoustical Foam - Polyol Resin Revision A
GM 9986048-1995 Polyol Resin, Low Modulus, Low Density, Preblend

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Polyol

GB/T 31062-2014 Polymeric polyols
GB/T 12008.1-1989 Polyether polyols--Designation
GB/T 12008.2-1989 Polyether polyols--Specification
GB/T 30915-2014 A-hydroxy polyether polyols
GB/T 15594-1995 Octahydroxy polyether polyols
GB/T 16577-1996 Tetra-hydroxy polyether polyols
GB/T 16576-1996 Tri-hydroxy polyether polyols
GB/T 12008.8-1992 Polyether polyols--Determination of viscosity
GB/T 16577-2010 Plastics.Tetrahydroxy polyether polyols
GB/T 15594-2010 Plastics.Octahydroxy polyether polyols
GB/T 16576-2010 Plastic Tris Hydroxy Polyether Polyol
GB/T 12008.3-1989 Palyether polyols--Determination of hydroxyl number
GB/T 12008.5-1989 Polyether polyols--Determination of acid number
GB/T 12008.4-1989 Polyether polyols--Determination of sodium and potassium
GB/T 12008.2-2010 Plastics.Polyether polyols.Part 2:Specification
GB/T 12008.7-1992 Polyether polyols--Determination of unsaturation
GB/T 12008.6-1989 Polyether polyols--Determination of water content
GB/T 12008.1-2009 Plastic.Polyether polyols.Part 1:Designation system
GB/T 12008.3-2009 Plastic.Polyether polyols.Part 3:Determination of hydroxyl number
GB/T 12008.5-2010 Plastics.Polyether polyols.Part 5:Determination of acidity as acid number
GB/T 12008.7-2010 Plastics.Polyether polyols.Part 7:Determination of viscosity
GB/T 12008.4-2009 Plastic.Polyether polyols.Part 4:Determination of sodium and potassium
GB/T 12008.6-2010 Plastics.Polyether polyols.Part 6:Determination of degree of unsaturation
GB/T 22313-2008 Determination of water content of polyols used in plastics for polyurethane production

(U.S.) Ford Automotive Standards, Polyol

FORD ESK-M2G293-A-1995 WATER PASTE, POLYOL
FORD ESK-M2G324-A1-1988 ADHESIVE, POLYURETHANE - POLYOL
FORD SK-M5D9510-A-1997 POLYOL, ADDITIVE, CROSSLINKER
FORD ESE-M99C115-A-2004 LUBRICANT, SYNTHETIC POLYOL ESTER ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD WSS-M5D22-A-2006 POLYOL FOR PUR FOAM, MOLDED ***TO USED WITH FORD WSS-M99P1111-A***
FORD ESK-M5D10-A-2006 POLYOL, COMPONENT A FOR ENERGY ABSORBING FOAM ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD WSS-M5D20-A-2006 POLYOL FOR PUR FOAM SEALS ***TO USED WITH FORD WSS-M99P1111-A***
FORD ESK-M5D13-A-2006 POLYOL FOR ENERGY ABSORBING PUR FOAM ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD WSS-M5D23-A-2006 POLYOL FOR ENERGY ABSORBING PUR FOAM ***TO USED WITH FORD WSS-M99P1111-A***
FORD WSS-M99P40-A3-2015 SPRAYABLE WEAR RESISTANT COATING, TWO COMPONENT, POLYOL NON-VISIBLE APPLICATIONS ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD ESK-M2G369-A1-2003 ADHESIVE, POLYURETHANE, TWO COMPONENT, POLYOL, METAL TO GLASS ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD WSS-M5D10-B-2006 POLYOL, COMPONENT A FOR ENERGY ABSORBING FOAM ***TO BE USED WITH FORD WSS-M99P1111-A***
FORD ESK-M2G365-A1-1995 ADHESIVE, POLYURETHANE, TWO COMPONENT, SOLVENT FREE, METAL TO E-COATED METAL, POLYOL COMPONENT

化学工业部, Polyol

HG 2228-1991 polyol phosphate

国家市场监督管理总局、中国国家标准化管理委员会, Polyol

GB/T 37196-2018 Plastics—Polyether polyols/polymeric polyols—Determination of aldehydes and ketones

Professional Standard - Chemical Industry, Polyol

HG/T 2706-1995 Polyester polyol nomenclature
HG/T 2707-1995 Polyester Polyol Specifications
HG/T 4572-2014 Plastics.Di-hydroxyl polyether polyols
HG/T 4573-2014 Plastics.Hex-hydroxyl polyether polyols
HG/T 2228-2014 Water treatment chemicals.Polyatomic alcohol phosphate ester
HG/T 2228-2006 Water treatment chemicals Polyatomic alcohol phosphate ester
HG/T 2228-1991 Water treatment agent polyol phosphate
HG/T 2708-1995 Determination of Acid Value in Polyester Polyol
HG/T 2709-1995 Determination of Hydroxyl Value in Polyester Polyol

American National Standards Institute （ANSI), Polyol

ANSI/ASTM D4274:1999 Method for Testing Polyurethane Polyol Raw Materials: Determination of Hydroxyl Numbers of Polyols (08.03)
ANSI/ASTM D4670:1997 Urethane-Polyol Raw Materials, Determination of Suspended Matter, Method for Testing (08.03)
ANSI/ASTM D4878:1998 Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols (08.03)
ANSI/ASTM D4671:1999 Polyurethane Raw Materials, Determination of Unsaturation of Polyols, Method for Testing (08.03)
ANSI/ASTM D4669:1998 Polyurethane Raw Materials, Determination of Specific Gravity of Polyols, Method for Testing (08.03)
ANSI/ASTM D4662:1998 Polyurethane Raw Materials, Determination of Acid and Alkalinity Numbers of Polyors, Method for Testing (08.03)
ANSI/ASTM D4890:1998 Test Methods for Polyurethane Raw Materials: Determination of Gardner and Alpha Color of Polyols (08.03)
ANSI/ASTM D4875:1999 Methods of Polyurethane Raw Materials: Determination of the Polymerized Ethylene Oxide Content of Polyether Polyols (08.03)
ANSI/ASTM D4273:1999 Method for Testing Polyurethane Raw Materials: Determination of Primary Hydroxyl Contents of Polyether Polyols (08.02)

Group Standards of the People's Republic of China, Polyol

T/CPUIA 0002-2021 Polyether Polyol Byproduct
T/CPCIF 0044-2020 Test method for polyol's purity - Gas chromatography
T/SPUIA 000001-2018 Purified terephthalic acid (PTA) residues to produce polyester polyols
T/CPCIF 0258-2023 Mixed polyhydric alcohol produced by triglycidyl isocyanurate

American Society for Testing and Materials (ASTM), Polyol

ASTM D6437-05(2016)e1 Standard Test Method for Polyurethane Raw Materials: Alkalinity in Low-Alkalinity Polyols (Determination of CPR Values of Polyols)
ASTM D6437-05 Standard Test Method for Polyurethane Raw Materials: alkalinity in Low-Alkalinity Polyols (Determination of CPR values of Polyols)
ASTM D6437-22 Standard Test Method for Polyurethane Raw Materials: Alkalinity in Low-Alkalinity Polyols (Determination of CPR Values of Polyols)
ASTM D2849-69(1980)e1 Methods of Testing Urethane Foam Polyol Raw Materials
ASTM D284-88(1999) Test methods for polyurethane foam polyol raw materials
ASTM D4878-23 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
ASTM D4669-18 Standard Test Method for Polyurethane Raw Materials: Determination of Specific Gravity of Polyols
ASTM D4669-98 Standard Test Method for Polyurethane Raw Materials Determination of Specific Gravity of Polyols
ASTM D4669-98(2002)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Specific Gravity of Polyols
ASTM D4669-07 Standard Test Method for Polyurethane Raw Materials: Determination of Specific Gravity of Polyols
ASTM D4669-07(2013)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Specific Gravity of Polyols
ASTM D4662-98 Standard Test Methods for Polyurethane Raw Materials Determination of Acid and Alkalinity Numbers of Polyols
ASTM D4672-00 Standard Test Methods for Polyurethane Raw Materials Determination of Water Content of Polyols
ASTM D4672-00(2006)e1 Standard Test Methods for Polyurethane Raw Materials: Determination of Water Content of Polyols
ASTM D4671-05(2010)e1 Standard Test Method for Polyurethane Raw Materials Determination of Unsaturation of Polyols
ASTM D4670-17 Standard Test Method for Polyurethane Raw Materials: Determination of Suspended Matter in Polyols
ASTM D4672-18 Standard Test Method for Polyurethane Raw Materials: Determination of Water Content of Polyols
ASTM D4672-12 Standard Test Method for Polyurethane Raw Materials: Determination of Water Content of Polyols
ASTM D4662-15 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
ASTM D4671-16 Standard Test Method for Polyurethane Raw Materials: Determination of Unsaturation of Polyols
ASTM D4670-97 Standard Test Method for Polyurethane Raw Materials Determination of Suspended Matter In Polyols
ASTM D4670-07 Standard Test Method for Polyurethane Raw Materials Determination of Suspended Matter In Polyols
ASTM D4670-97(2002) Standard Test Method for Polyurethane Raw Materials Determination of Suspended Matter In Polyols
ASTM D4671-05 Standard Test Method for Polyurethane Raw Materials Determination of Unsaturation of Polyols
ASTM D4662-08(2011)e1 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
ASTM D4671-21 Standard Test Method for Polyurethane Raw Materials: Determination of Unsaturation of Polyols
ASTM D4671-99 Standard Test Method for Polyurethane Raw Materials Determination of Unsaturation of Polyols
ASTM D4670-07(2012)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Suspended Matter In Polyols
ASTM D4662-08 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
ASTM D4662-20 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
ASTM D4670-17(2022)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Suspended Matter in Polyols
ASTM D6437-05(2010)e1 Standard Test Method for Polyurethane Raw Materials: alkalinity in Low-Alkalinity Polyols (Determination of CPR values of Polyols)
ASTM D4878-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
ASTM D4274-21 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
ASTM D4274-23 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
ASTM D4878-98 Standard Test Methods for Polyurethane Raw Materials Determination of Viscosity of Polyols
ASTM D7253-06(2011)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols
ASTM D4662-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
ASTM D7253-16 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols
ASTM D7253-22 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols
ASTM D4890-13 Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols
ASTM D4878-15 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
ASTM D4890-98(2003) Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols
ASTM D4274-99 Standard Test Methods for Testing Polyurethane Raw Materials Determination of Hydroxyl Numbers of Polyols
ASTM D4274-05 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
ASTM D4890-18 Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols
ASTM D4273-23 Standard Test Method for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether Polyols
ASTM D4273-11 Standard Test Method for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether Polyols
ASTM D4274-16 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
ASTM D6342-12(2017)e1 Standard Practice for Polyurethane Raw Materials: Determining Hydroxyl Number of Polyols by Near Infrared (NIR) Spectroscopy
ASTM D4273-18 Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols
ASTM D4274-11 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
ASTM D6979-13 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D6342-22 Standard Practice for Polyurethane Raw Materials: Determining Hydroxyl Number of Polyols by Near Infrared (NIR) Spectroscopy
ASTM D4875-18 Standard Test Methods of Polyurethane Raw Materials: Determination of the Polymerized Ethylene Oxide Content of Polyether Polyols
ASTM D4875-11 Standard Test Methods of Polyurethane Raw Materials: Determination of the Polymerized Ethylene Oxide Content of Polyether Polyols
ASTM D4273-05 Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols
ASTM D4273-99 Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols
ASTM D6979-18 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D7253-06 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols

International Organization for Standardization (ISO), Polyol

ISO 14899:2001 Plastics - Polyols for use in the production of polyurethane - Determination of basicity
ISO 14899:2022 Plastics — Polyols for use in the production of polyurethanes — Determination of basicity
ISO 14900:2001 Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number
ISO 14900:2017 Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number
ISO 14897:2002 Plastics - Polyols for use in the production of polyurethane - Determination of water content
ISO 14897:2000 Plastics - Polyols for use in the production of polyurethane - Determination of water content
ISO/DIS 14900 Plastics — Polyols for use in the production of polyurethanes — Determination of hydroxyl number
ISO 14897:2023 Plastics — Polyols for use in the production of polyurethanes — Determination of water content
ISO/FDIS 14897 Plastics — Polyols for use in the production of polyurethanes — Determination of water content
ISO/CD 4764:2023 Plastics-Polyols for Use in the production of polyurethanes- Determination of degree of unsaturation value by using Iodine method
ISO 15063:2011 Plastics - Polyols for use in the production of polyurethanes - Determination of hydroxyl number by NIR spectroscopy
ISO 17710:2023 Plastics — Polyols for use in the production of polyurethanes — Determination of degree of unsaturation by microtitration
ISO/FDIS 17710 Plastics — Polyols for use in the production of polyurethanes — Determination of degree of unsaturation by microtitration
ISO 15063:2004 Plastics - Polyols for use in the production of polyurethanes - Determination of hydroxyl number by NIR spectroscopy
ISO 25761:2008 Plastics - Polyols for use in the production of polyurethanes - Determination of basicity (total amine value), expressed as percent nitrogen
ISO 17710:2002 Plastics - Polyols for use in the production of polyurethane - Determination of degree of unsaturation by microtitration
ISO 14900:2001/Cor 1:2005 Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number; Technical Corrigendum 1
ISO 25761:2014 Plastics - Polyols for use in the production of polyurethanes - Determination of basicity (total amine value), expressed as percent nitrogen

Society of Automotive Engineers (SAE), Polyol

SAE AMS3023-1995 Fluid, Reference for Testing Polyol Ester (and Diester) Resistant Material
SAE AMS3021D-2007 Fluid, Reference for Testing Di-Ester (Polyol) Resistant Material
SAE AMS3023A-2013 Fluid, Reference for Testing Polyol Ester (And Diester) Resistant Material
SAE AMS3021A-1989 FLUID, REFERENCE FOR TESTING DI-ESTER (POLYOL) RESISTANT MATERIAL
SAE AMS3021B-2004 FLUID, REFERENCE FOR TESTING DI-ESTER (POLYOL) RESISTANT MATERIAL
SAE AMS3021C-1998 Fluid, Reference, For Testing Di-Ester (Polyol) Resistant Material
SAE AMS3085-2007 Fluid, Reference for Testing AS5780 HPC Class (Polyol) Resistant Material
SAE AMS3021-1979 REFERENCE FLUID FOR TESTING DI-ESTER (POLYOL) RESISTANT MATERIAL
SAE AMS3023-2003 FLUID, REFERENCE FOR TESTING POLYOL ESTER (AND DIESTER) RESISTANT MATERIAL
SAE AMS3023C-2022 Fluid, Reference for Testing Polyol Ester (and Diester) Resistant Material
SAE ARP6299-2020 Procedure for Thermal Aging Test for Polyol Ester Gas Turbine Engine Lubricants

SAE - SAE International, Polyol

SAE AMS3021B-1994 Fluid@ Reference for Testing Di-Ester (Polyol) Resistant Material
SAE AMS3021E-2017 Fluid@ Reference for Testing Di-Ester (Polyol) Resistant Material
SAE AMS3021F-2018 Fluid@ Reference for Testing Di-Ester (Polyol) Resistant Material
SAE AMS3023B-2017 Fluid@ Reference for Testing Polyol Ester (and Diester) Resistant Material
SAE AMS3085A-2016 Fluid@ Reference for Testing AS5780 HPC Class (Polyol) Resistant Material (Also known as Eastman Reference Oil 300)
SAE AMS3085B-2018 Fluid@ Reference for Testing AS5780 HPC Class (Polyol) Resistant Material (Also known as Eastman Reference Oil 300)

RU-GOST R, Polyol

GOST 34364-2017 Plastics. Polyols for polyurethanes. Determination of basicity on nitrogen

Professional Standard - Agriculture, Polyol

SZDB/Z 320-2018 Determination of Polyols in Food by Gas Chromatography-Mass Spectrometry

British Standards Institution (BSI), Polyol

BS ISO 14899:2001 Plastics - Polyols for use in the production of polyurethane - Determination of basicity
BS ISO 14900:2001 Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number
BS ISO 14897:2002 Plastics - Polyols for use in the production of polyurethane - Determination of water content
BS ISO 14897:2023 Plastics. Polyols for use in the production of polyurethanes. Determination of water content
BS ISO 15063:2011 Plastics. Polyols for use in the production of polyurethanes. Determination of hydroxyl number by NIR spectroscopy
23/30464067 DC BS EN ISO 14900. Plastics. Polyols for use in the production of polyurethane. Determination of hydroxyl number
BS ISO 14900:2017 Tracked Changes. Plastics. Polyols for use in the production of polyurethane. Determination of hydroxyl number
BS ISO 14899:2022 Tracked Changes. Plastics. Polyols for use in the production of polyurethane. Determination of basicity
BS ISO 17710:2023 Plastics. Polyols for use in the production of polyurethanes. Determination of degree of unsaturation by microtitration
BS ISO 17710:2002 Plastics - Polyols for use in the production of polyurethane - Determination of degree of unsaturation by microtitration
BS ISO 25761:2008 Plastics - Polyols for use in the production of polyurethanes - Determination of basicity (total amine value), expressed as percent nitrogen
BS ISO 25761:2014 Plastics. Polyols for use in the production of polyurethanes. Determination of basicity (total amine value), expressed as percent nitrogen

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc., Polyol

ASHRAE SE-99-14-3-1999 Determination of Properties of Highly Optimized Polyol Ester Lubricants
ASHRAE MN-00-9-1-2000 Impact of Chemistry on the Use of Polyol Ester Lubricants in Refrigeration
ASHRAE CH-06-14-4-2006 Mechanism for Reaction between Polyolester Lubricant and Ferrous Metals Part II: Research Phase
ASHRAE 3999-1996 Lubricant Return Comparison of Naphthenic and Polyol Ester Oils in R-134a Household Refrigeration Applications
ASHRAE 3969-1996 Vapor-Liquid Equilibria for R-22@ R-134a@ R-125@ and R-32/125 with a Polyol Ester Lubricant: Measurements and Departure from Ideality

AENOR, Polyol

UNE 53951:2004 Plastics. Raw materials test for polyurethane. Polyols. Determination of pH
UNE 53950:2004 Plastics. Raw materials test for polyurethane. Determination of Cloud Point of polyols
UNE 53985-2:2004 Plastics. Raw materials tests for polyurethane. Polyols. Part 2: Determination of acid number.
UNE 53985-3:2004 Plastics. Test method for polyurethane raw materials. Polyols. Part 3: Determination of basicity.
UNE 53985-1:2004 Plastics. Test methods for polyuretane raw materials. Polyols. Part 1: Determination of hydroxil numbers.
UNE 53985-5:2008 Plastics. Test methods for polyuretane raw materials. Polyols. Part 5: Determination the sodium and potassium content.
UNE 53985-4:2004 Plastics. Test methods for polyurethane raw materials. Polyols. Part 4: Determination of total unsaturation.

工业和信息化部, Polyol

HG/T 2709-2022 Determination of hydroxyl value of polyester polyols used in plastics for the production of polyurethane
HG/T 5910-2021 Analysis method of chemical components of bimetal-supported polyether polyol synthesis catalyst

Japanese Industrial Standards Committee (JISC), Polyol

JIS K 1557-1:2007 Plastics -- Polyols for use in the production of polyurethane -- Part 1: Determination of hydroxyl number
JIS K 1557-2:2007 Plastics -- Polyols for use in the production of polyurethane -- Part 2: Determination of water content
JIS K 1557-4:2007 Plastics -- Polyols for use in the production of polyurethane -- Part 4: Determination of basicity
JIS K 1557-3:2007 Plastics -- Polyols for use in the production of polyurethane -- Part 3: Determination of degree of unsaturation by microtitration
JIS K 1557-5:2007 Plastics -- Polyols for use in the production of polyurethane -- Part 5: Determination of color, viscosity, acid value and pH

Association Francaise de Normalisation, Polyol

NF EN ISO 13479:2022 Tubes en polyoléfines pour le transport des fluides - Détermination de la résistance à la propagation de la fissure - Méthode d'essai de la propagation lente de la fissure d'un tube entaillé (essai d'entaille)

国家能源局, Polyol

SH/T 0946-2017 Determination of total acid number of polyol ester and diester gas turbine engine lubricating oils by automatic potentiometric titration method