ASTM D1218-12

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

SIGNIFICANCE AND USE
5.1 Refractive index and refractive dispersion are fundamental physical properties, which can be used in conjunction with other properties to characterize pure hydrocarbons and their mixtures.
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 D1500.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.  
1.6  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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2012
• ICS: 71.080.01 - Organic chemicals in general
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.04.0D - Physical and Chemical Methods

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1218 − 12
StandardTest Method for
Refractive Index and Refractive Dispersion of Hydrocarbon
1
Liquids
This standard is issued under the fixed designation D1218; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* and/or mercury containing products into your state or country
may be prohibited by law.
1.1 This test method covers the measurement of refractive
1.6 This standard does not purport to address all of the
index, accurate to four decimal places or better, of transparent
safety concerns, if any, associated with its use. It is the
and light-colored hydrocarbons in the range of 1.3300 to
responsibility of the user of this standard to establish appro-
1.5000 at temperatures from 20 to 30°C by manual (optical-
priate safety and health practices and determine the applica-
mechanical) or automatic (digital) procedure.
bility of regulatory limitations prior to use.
1.2 The manual (optical-mechanical) procedure also covers
themeasurementofrefractivedispersionaccuratetothefourth
2. Referenced Documents
decimal place or better.
2
NOTE 1—The test method may be suitable for measuring the refractive 2.1 ASTM Standards:
indices of liquids above 1.5000 and at temperatures both below 20°C and
D1193Specification for Reagent Water
above 30°C; however, the test method precision may not apply. Verifica-
D1500Test Method forASTM Color of Petroleum Products
tion of the accuracy of such measurements will depend upon the
(ASTM Color Scale)
availability of reliable, certified reference standards that demonstrate the
D6299Practice for Applying Statistical Quality Assurance
performance of the instrument used under the particular measuring
conditions. and Control Charting Techniques to Evaluate Analytical
Measurement System Performance
1.3 Thetestmethodmaynotbeapplicabletoliquidsthatare
D6300Practice for Determination of Precision and Bias
strongly colored, or that have bubble points so near the test
Data for Use in Test Methods for Petroleum Products and
temperature that a reading cannot be obtained before substan-
Lubricants
tial weathering takes place. Liquid color should be limited to
E1Specification for ASTM Liquid-in-Glass Thermometers
No. 4 ASTM Color or lighter, as determined by Test Method
D1500.
2.2 ASTM Adjuncts:
Determination of Precision and Bias Data for Use in Test
1.4 The values stated in SI units are to be regarded as
Methods for Petroleum Products and Lubricants, Version
standard. No other units of measurement are included in this
3
4.0.65
standard.
1.5 WARNING—Mercury has been designated by many
3. Terminology
regulatory agencies as a hazardous material that can cause
3.1 Definitions:
central nervous system, kidney and liver damage. Mercury, or
3.1.1 refractive dispersion, n—the difference between the
its vapor, may be hazardous to health and corrosive to
refractive indices of a substance for light of two different
materials.Cautionshouldbetakenwhenhandlingmercuryand
wavelengths, both indices being measured at the same tem-
mercury containing products. See the applicable product Ma-
perature.
terial Safety Data Sheet (MSDS) for details and EPA’s
3.1.1.1 Discussion—For convenience in calculations, the
website—http://www.epa.gov/mercury/faq.htm—for addi-
value of the difference thus obtained is usually multiplied by
tional information. Users should be aware that selling mercury
10000.
1
This test method is under the jurisdiction of ASTM Committee D02 on
2
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D02.04.0D on Physical and Chemical Methods. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved Nov. 1, 2012. Published December 2012. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1952. Last previous edition approved in 2007 as D1218–02(2007). the ASTM website.
3
DOI: 10.1520/D1218-12. Out of print. No longer available from ASTM International Headquarters.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1218 − 12
3.1.2 refractive index, n—the ratio of the velocity of light 6.4 Light Sources—The following type of light source can
(of specified wavelength) in air, to its velocity in the substance beusedinconjunctionwithanoptica
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1218 − 02 (Reapproved 2007) D1218 − 12
Standard Test Method for
Refractive Index and Refractive Dispersion of Hydrocarbon
1
Liquids
This standard is issued under the fixed designation D1218; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 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 D1500.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central
nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution
should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet
(MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware
that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
E1 Specification for ASTM Liquid-in-Glass Thermometers
2.2 ASTM Adjuncts:
3
Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants, Version 4.0.65
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.04.0D
on Physical and Chemical Methods.
Current edition approved Nov. 1, 2007Nov. 1, 2012. Published January 2008December 2012. Originally approved in 1952. Last previous edition approved in 20022007
as D1218D1218–02(2007).–02. DOI: 10.1520/D1218-02R07.10.1520/D1218-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from ASTM International Headquarters. Order No.Out of print. No longer available from ADJD6300. (Originally published as Lawrey, D. M. G., ed., ASTM
International Headquarters.Calculation of Precision Data: Petroleum Test Methods, ASTM International, 1996.)
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

----------------------
...