ASTM-D1218:2007 Edition

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D1218-02(2007) Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids

Published By	Publication Date	Number of Pages
ASTM	2007	7

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Description

ASTM D1218-02-Reapproved2007

Historical Standard: Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids

ASTM D1218

Scope

1.1 This test method covers the measurement of refractive index, accurate to four decimal places or better, of transparent and light-colored hydrocarbons in the range of 1.3300 to 1.5000 at temperatures from 20 to 30°C by manual (optical-mechanical) or automatic (digital) procedure.

1.2 The manual (optical-mechanical) procedure also covers the measurement of refractive dispersion accurate to the fourth decimal place or better.

Note 1—The test method may be suitable for measuring the refractive indices of liquids above 1.5000 and at temperatures both below 20°C and above 30°C; however, the test method precision may not apply. Verification of the accuracy of such measurements will depend upon the availability of reliable, certified reference standards that demonstrate the performance of the instrument used under the particular measuring conditions.

1.3 The test method may not be applicable to liquids that are strongly colored, or that have bubble points so near the test temperature that a reading cannot be obtained before substantial weathering takes place. Liquid color should be limited to No. 4 ASTM Color or lighter, as determined by Test Method D 1500.

1.4 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 safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

refractive dispersion ; refractive index; refractometer; Electrical insulating petroleum products; Hydrocarbons; Refractive dispersion; Refractive index

ICS Code

ICS Number Code 75.080 (Petroleum products in general)

DOI: 10.1520/D1218-02R07

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Apparatus Reagents and Materials Preparation of Apparatus
3	Calibration of Refractometer Using Solid Reference Standard Calibration of the Refractometer Using Liquid Reference Standards Procedure Quality Control Calculation and Report Precision and Bias
4	Apparatus Reagents and Materials Sampling Preparation of Apparatus Calibration of the Refractometer Using Liquid Reference Standards Procedure Quality Control Report Precision and Bias
5	Keywords X1. FACTORS THAT AFFECT PRECISION AND ACCURACY X1.1 Temperature X1.2 Wavelength (Light Source) X2. INSTRUMENT CALIBRATION X2.1 X2.2 X2.3 X2.4
6	X2.5 X2.6 X3. REFLECTED VERSUS TRANSMITTED LIGHT X3.1 X3.2 X4. GUIDELINES FOR QUALITY CONTROL X4.1 X4.2 X4.3 X4.4 X4.5 X4.6

Additional information

Standard Title	D1218-02(2007) Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids
Published Code	ASTM
Publication Date	2007
Pages Count	7