New Standard from Last Update.

1. SCOPE

1.1 This standard (Part 1/Sec 2) lays down the methods of test for individual oils, fats, blended oils, fortified oils, fatty materials and co-products. It contains definitions of terms used in trade and industry and prescribes the methods for determination of moisture, insoluble impurities, acid value and free fatty acids, unsaponifiable matter, melting point, refractive index, specific gravity, titre of mixed fatty acids, colour, iodine value (Wijs), saponification value, acetyl value and hydroxyl value, allyl isothiocyanate content, Reichert-Meissl value and Polenske value, cloud point and diene and triene content, anisildine value and alkalinity.

1.2 Should any inconsistency be found to exist between the methods prescribed in this standard and those prescribed in the standard for an individual material, the latter shall prevail.

NOTE - Only calibrated instruments and calibrated glassware shall be used in sampling and testing.

2. REFERENCES

The following Indian Standards contain provisions which through reference in this text, constitute provision of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

170 : 2004 Acetone - Specification (fourth revision)

250 : 1964 Specification for potassium bichromate, technical and analytical reagent (revised)

265 : 1993 Hydrochloric acid - Specification (fourth revision)

266 : 1993 Sulphuric acid - Specification (third revision)

321 : 1964 Specification for absolute alcohol (revised)

323 : 2009 Rectified spirit for industrial use - Specification (second revision)

IS 548 (Part 1/Sec 1) : 2021 Method of sampling and test for oils and fats: Part 1 Sampling, physical and chemical tests, Section 1 Sampling

1070 : 1992 Reagent grade water - Specification (third revision)

1459 : 2018 Kerosene - Specification (fourth revision)

1745 : 2018 Petroleum hydrocarbon solvents - Specification (third revision)