ASTM D7662-15

Standard Test Method for Carbon Content in Carbon Black Feedstock Oils

SIGNIFICANCE AND USE
4.1 Measuring the total carbon content of feedstock oil is often a necessary component in calculations for carbon dioxide emissions, estimating yield of a process, or assessing product quality.  
4.2 The carbon black industry measures carbon content of feedstock oils along with carbon content of carbon black products per Test Method D7633 for Carbon Black-Carbon Content in calculations to determine carbon dioxide emissions for compliance with governmental greenhouse-gas-reporting requirements.
SCOPE
1.1 This test method covers the instrumental determination of carbon content in samples of carbon black feedstock oils. Values obtained represent the total carbon content.  
1.2 This test method is applicable to carbon black feedstock oils derived from petroleum, coal, and other sources which include fuel oils, residues, tars, pitches, reclaimed oils, and similar materials that are normally handled as liquids. This test method is applicable to products that typically contain 75 to 94 mass % carbon.  
1.3 The results of these tests can be expressed as mass % carbon.  
1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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: 14-Jun-2015
• ICS: 75.080 - Petroleum products in general
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.66 - Environment, Health, and Safety

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7662 − 15
Standard Test Method for
1
Carbon Content in Carbon Black Feedstock Oils
This standard is issued under the fixed designation D7662; 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.
1. Scope 3. Summary of Test Method
3.1 In this test method, a sample of feedstock oil is weighed
1.1 This test method covers the instrumental determination
of carbon content in samples of carbon black feedstock oils. in a combustion boat containing a tungsten oxide based
accelerator and the carbon content is determined by placing the
Values obtained represent the total carbon content.
boat in a tube furnace at 1350°C in an air- or oxygen-enriched
1.2 This test method is applicable to carbon black feedstock
atmosphere resulting in complete combustion. Carbon in the
oils derived from petroleum, coal, and other sources which
sample is completely oxidized to carbon dioxide. Moisture and
include fuel oils, residues, tars, pitches, reclaimed oils, and
particulates are removed from the gas stream by traps filled
similar materials that are normally handled as liquids. This test
with anhydrous magnesium perchlorate.The gas stream is then
method is applicable to products that typically contain 75 to 94
passed through a cell in which carbon dioxide concentration is
mass % carbon.
measured by an infrared (IR) absorption detector at a precise
1.3 The results of these tests can be expressed as mass % wavelength in the IR spectrum.
carbon.
3.2 This test method is for use with commercially available
carbon analyzers equipped to carry out the combustion and
1.4 Units—The values stated in SI units are to be regarded
measurement operations automatically.
as standard. No other units of measurement are included in this
standard.
3.3 The carbon analyzer shall be calibrated using an appro-
priate calibration standard (see 6.5).
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.4 The instrument may be configured to analyze more than
responsibility of the user of this standard to establish appro-
one element such as a carbon-sulfur analyzer. In this case, the
priate safety and health practices and determine the applica-
analyzer has individual detectors for each element that are
bility of regulatory limitations prior to use.
arranged in series.
2. Referenced Documents
4. Significance and Use
2
2.1 ASTM Standards:
4.1 Measuring the total carbon content of feedstock oil is
D4057 Practice for Manual Sampling of Petroleum and
often a necessary component in calculations for carbon dioxide
Petroleum Products
emissions, estimating yield of a process, or assessing product
D4177 Practice for Automatic Sampling of Petroleum and
quality.
Petroleum Products
4.2 The carbon black industry measures carbon content of
D4483 Practice for Evaluating Precision for Test Method
feedstock oils along with carbon content of carbon black
Standards in the Rubber and Carbon Black Manufacturing
products per Test Method D7633 for Carbon Black-Carbon
Industries
Content in calculations to determine carbon dioxide emissions
D7633 Test Method for Carbon Black—Carbon Content
for compliance with governmental greenhouse-gas-reporting
requirements.
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
5. Apparatus
Black and is the direct responsibility of Subcommittee D24.66 on Environment,
Health, and Safety.
5.1 Thereareanumberofcommercialinstrumentsavailable
Current edition approved June 15, 2015. Published September 2015. Originally
that are designed to measure carbon content in organic mate-
approved in 2010. Last previous edition approved in 2013 as D7662 – 13. DOI:
rials including carbon and carbon-sulfur analyzers. This test
10.1520/D7662-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or method makes no specifications regarding system designs.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.2 Functionally,however,thefollowingarespecifiedforall
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. instruments:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7662 − 15
5.2.1 An analytical balance, or equivalent, that is capable of 8.3 Makeaminimumoftwodeterminationstoconditionthe
a weighing sensitivity of 0.1 mg or better resolution. equipment or follow the manufacturer’s recommendation to
5.2.2 The combustion tube and boat are made of a suitable
...

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: D7662 − 13 D7662 − 15
Standard Test Method for
1
Carbon Content in Carbon Black Feedstock Oils
This standard is issued under the fixed designation D7662; 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.
1. Scope
1.1 This test method covers the instrumental determination of carbon content in samples of carbon black feedstock oils. Values
obtained represent the total carbon content.
1.2 This test method is applicable to carbon black feedstock oils derived from petroleum, coal, and other sources which include
fuel oils, residues, tars, pitches, reclaimed oils, and similar materials that are normally handled as liquids. This test method is
applicable to products that typically contain 75 to 94 mass % carbon.
1.3 The results of these tests can be expressed as mass % carbon.
1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.5 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:
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D7633 Test Method for Carbon Black—Carbon Content
3. Summary of Test Method
3.1 In this test method, a sample of feedstock oil is weighed in a combustion boat containing a tungsten oxide based accelerator
and the carbon content is determined by placing the boat in a tube furnace at 1350°C in an air- or oxygen-enriched atmosphere
resulting in complete combustion. Carbon in the sample is completely oxidized to carbon dioxide. Moisture and particulates are
removed from the gas stream by traps filled with anhydrous magnesium perchlorate. The gas stream is then passed through a cell
in which carbon dioxide concentration is measured by an infrared (IR) absorption detector at a precise wavelength in the IR
spectrum.
3.2 This test method is for use with commercially available carbon analyzers equipped to carry out the combustion and
measurement operations automatically.
3.3 The carbon analyzer shall be calibrated using an appropriate calibration standard (see 6.5).
3.4 The instrument may be configured to analyze more than one element such as a carbon-sulfur analyzer. In this case, the
analyzer has individual detectors for each element that are arranged in series.
4. Significance and Use
4.1 Measuring the total carbon content of feedstock oil is often a necessary component in calculations for carbon dioxide
emissions, estimating yield of a process, or assessing product quality.
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.66 on Environment, Health,
and Safety.
Current edition approved Nov. 1, 2013June 15, 2015. Published December 2013September 2015. Originally approved in 2010. Last previous edition approved in 20112013
as D7662 – 11.D7662 – 13. DOI: 10.1520/D7662-13.10.1520/D7662-15.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7662 − 15
4.2 The carbon black industry measures carbon content of feedstock oils along with carbon content of carbon black products
per Test Method D7633 for Carbon Black-Carbon Content in calculations to determine carbon dioxide emissions for compliance
with governmental greenhouse-gas-reporting requirements.
5. Apparatus
5.1 There are a number of commercial instruments available that are designed to measure carbon content in organic materials
including carbon and carbon-sulfur analyzers. This test method makes no specifications regarding system designs.
5.
...