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ASTM E191-64(2005)

(Specification)

Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds

Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds

ABSTRACT
This specification covers the design requirements of each component and basic equipment comprising the apparatus used for the microdetermination of carbon and hydrogen in organic and organometallic compounds along the lines of the conventional method of Pregl, but with modifications more in line with modern practice. Due to the diversity of this apparatus by which correct results can be obtained, this specification is intended to indicate what is acceptable rather than what is mandatory. The components covered here are the oxygen supply, pressure, regulator, drying and purifying tube, flowmeter, combustion unit, absorption tubes, guard tube, Mariotte bottle, and weighing accessories.
SCOPE
1.1 This specification covers apparatus and basic equipment for the determination of carbon and hydrogen in organic and organometallic compounds along the lines of the conventional method of Pregl, but with modifications more in line with modern practice. Owing to the diversity of apparatus by which correct results can be obtained, this specification is intended to indicate what is acceptable rather than what is mandatory. Note 1Specifications for several items subsequently listed were developed by the Committee for the Standardization of Microchemical Apparatus, Division of Analytical Chemistry, American Chemical Society.
1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

General Information

Status
Historical
Publication Date
30-Apr-2005
Technical Committee
E41 - Laboratory Apparatus
Drafting Committee
E41.01 - Laboratory Ware and Supplies
Current Stage
Ref Project

Relations

Replaces
ASTM E191-64(1999)e1 - Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds
Effective Date
01-May-2005
Replaced By
ASTM E191-64(2011) - Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds
Effective Date
01-Oct-2011
Referred By
ASTM D7589-16e1 - Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VID Spark Ignition Engine<rangeref></rangeref >
Effective Date
01-May-2005
Referred By
ASTM D8111-23a - Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIH, Spark-Ignition Engine
Effective Date
01-May-2005
Referred By
ASTM D6984-18e1 - Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine
Effective Date
01-May-2005
Referred By
ASTM D8226-21ae1 - Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VIF Spark Ignition Engine<rangeref></rangeref >
Effective Date
01-May-2005
Referred By
ASTM D7320-18e1 - Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIG, Spark-Ignition Engine
Effective Date
01-May-2005
Referred By
ASTM D8114-23 - Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VIE Spark Ignition
Effective Date
01-May-2005
Referred By
ASTM D6709-22 - Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine)
Effective Date
01-May-2005

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ASTM E191-64(2005) - Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic CompoundsASTM E191-64(2005) - Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds
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ASTM E191-64(2005) - Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds
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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: E191 – 64 (Reapproved 2005)
Standard Specification for
Apparatus For Microdetermination of Carbon and
1
Hydrogen in Organic and Organo-Metallic Compounds
This standard is issued under the fixed designation E191; 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 4. Pressure Regulator
5
1.1 This specification covers apparatus and basic equipment 4.1 The pressure regulator, shown in Fig. 1 and Fig. 2,
for the determination of carbon and hydrogen in organic and consisting of a bell and inlet tube submerged in a suitable
organometallic compounds along the lines of the conventional confining liquid, shall be used to supply air or oxygen, or both,
method of Pregl, but with modifications more in line with at constant pressure to the combustion system. Substitution of
modern practice. Owing to the diversity of apparatus by which a fine gas-control valve and flowmeter for the pressure regu-
correct results can be obtained, this specification is intended to lator is optional.
indicate what is acceptable rather than what is mandatory.
2
5. Drying and Purifying Tube
NOTE 1—Specifications for several items subsequently listed were
5.1 The conventional bubble-container U-tube shown in
developed by the Committee for the Standardization of Microchemical
Fig. 3 shall be used for drying and purifying the entering air or
Apparatus, Division of Analytical Chemistry, American Chemical Soci-
2
oxygen, or both.
ety.
1.2 The values stated in inch-pound units are to be regarded
6. Flowmeter
as the standard. The metric equivalents of inch-pound units
6.1 The rate of gas flow shall be determined by the bubble
may be approximate.
counter of the bubble-counter U-tube, or by a more accurate
6
flow-meter, such as the floating ball-in-column.
2. Referenced Documents
3
2.1 ASTM Standards:
7. Combustion Unit
E124 Specification for Weighing and Drying Apparatus for
7.1 The combustion unit shall consist of a long furnace, a
Microchemical Analysis
sample furnace, a constant-temperature heating mortar, a
E148 SpecificationforApparatusforMicrodeterminationof
combustion tube, and a combustion-tube closure.
4
Nitrogen by the Dumas Method
7.1.1 Long Furnace:
7.1.1.1 The long furnace shall have a maximum over-all
3. Oxygen Supply
length of 8 in. (203 mm) with the wall thickness at the ends not
3.1 Any cylinder or other suitable source of oxygen free of
1
to exceed ⁄4 in. (6 mm). The furnace shall accommodate
hydrogen and organic impurities may be used. Oxygen pre-
combustion tubes up to 13 mm in outside diameter. Electric
pared from liquid air is satisfactory.
heating elements shall be easily replaceable. The furnace shall
be mounted firmly on a substantial support.
1
This specification is under the jurisdiction of ASTM Committee E41 on
7.1.1.2 Thefurnaceshallbecapableofcontinuousoperation
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
attemperaturesupto900°Casmeasuredinsidethecombustion
Apparatus.
tube at the middle of the furnace. The temperature drop from
Current edition approved May 1, 2005. Published October 2005. Originally
3
approved in 1962. Discontinued in 1988 and reinstated in 1989. Last previous the center to points 1 in. (25 mm) and 1 ⁄4 in. (45 mm) from
e1
edition approved in 1999 as E191 – 64 (1999) . DOI: 10.1520/E0191-64R05.
either end shall not exceed 15 and 7 %, respectively, based
2
Committee for the Standardization of Microchemical Apparatus. Division of
Analytical Chemistry,American Chemistry Society, 1949 Report on Recommended
Specifications for Microchemical Apparatus, Carbon-Hydrogen, Dumas Nitrogen,
Sulfur, and Halogen, Analytical Chemistry Vol 21, p. 1555 (1949).
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Furter, M. F., and Steyermark, A., “Pressure Regulator for Use in Microdeter-
Standards volume information, refer to the standard’s Document Summary page on mination of Carbon and Hydrogen,” Analytical Chemistry, Vol 20, 1948, p. 257.
6
the ASTM website. Kuck, J. A., and Altieri, P. L., “Spherical Ground-Glass Joints vs. Rubber
4
Withdrawn. The last approved version of this historical standard is referenced Tubing Connectors on the C and H Absorption Train,” Mikrochimica Acta, 1956 ,
on www.astm.org. p. 1556.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E191 – 6
...

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