Measures displacement for axial tensile, compression, and cyclic testing Gage lengths from 10 mm to 50 mm 0. By means of our tensile testing expertise and modular product design, we will help find the solution that is right for you. If such is the case, more than one value of the strain-hardening exponent may be obtained 2 by agreement using this test method. Work Item s — sstm revisions of this standard. ASTM E is for metallic sheet materials with thicknesses of at least 0. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. This test practice of using a factor of to convert bromine number method is generally applicable to gasoline including leaded, to bromine index is not applicable for these lower values of unleaded, and oxygenated fuels , kerosine, and distillates in the bromine number.
The values given in parentheses are for information Under only. It is the aliphatic mono-olefins and that fall within the range of 95 to responsibility of the user of this standard to establish appro- bromine number see Note 1.
This test method has been priate safety and health practices and determine the applica- found suitable for such materials as commercial propylene bility of regulatory limitations prior to use. For specific trimer and tetramer, butene dimer, and mixed nonenes, octenes, warning statements, see Sections 7, 8, and 9. This test method is not satisfactory for normal alpha-olefins.
Atmospheric Pressure 1. Current edition approved April 15, Published April Originally 3 approved in Last previous edition approved in as D— Summary of Test Method sufficiently high purity to permit its use without lessening the 4. The end to water shall be understood to mean reagent water as defined point is indicated by a sudden change in potential on an by Type III of Specification D Causes severe burns, 5.
Significance and Use harmful if inhaled. When used in conjunction —Dissolve Apparatus shall be standardized and the determined molarity used in 6. The standardization procedure shall paratus designed to perform titrations to pre-set end points see be as follows: Note 2 may be used in conjunction with a high-resistance 7. May be fatal if swallowed. Liquid and vapor sensitivity such that a voltage change of approximately 50 mV causes severe burns.
Harmful if inhaled; relative density 1. Other in a mL iodine number flask. Chill the solution in a bath types of commercially available electronic titrimeters, includ- for approximately 10 min and, with constant swirling of the ing certain pH meters, have also been found suitable. Stopper the flask immediately, shake the contents, previous versions of this test method. Shake vigorously, add mL of water in such a manner as to rinse the stopper, lip and walls of the 6.
Near the end of the titration, add 1 mL of starch wire approximately 12 mm long and 1 mm in diameter. The indicator solution and titrate slowly to disappearance of the wires shall be located 5 mm apart and approximately 55 mm blue color.
Calculate the molarity of the bromide-bromate below the level of the titration solvent. Vapor harmful. For Suggestions on the testing of reagents not Can be fatal or cause blindness if swallowed or inhaled. Chemicals, BDH Ltd. Pharmacopeial Convention, Inc. USPC , Rockville, 7.
Dilute to 1 L and mix thoroughly by shaking. Cyclohexene Restandardize A Only the 2,4,4-trimethylpentene isomer. Bromine 7. If desired, add about 0. Starch solutions some preserved with salicylic terized by the properties shown in Table 1.
The theoretical acid are also commercially available and may be substituted. Strong oxi- prepared from cyclohexene and diisobutene,5 by the following dizer. Contact with organic material can cause fire. Can be fatal procedure: if swallowed. High concentrations can cause unconsciousness or packing. Contact may cause skin irritation and dermatitis.
When the olefin disappears into the gel, fill the column with 7. Discard the first 10 mL of percolate and collect the 1,1,1-trichloroethane, an ozone-depleting chemical, is neces- next 10 mL that is the purified olefin for test of the bromine sary because its manufacture and import has been discontin- number procedure.
Determine and record the density and ued. Discard the alternative to 1,1,1-trichloroethane until a permanent replace- remaining percolate. A fins is needed as a pre-purification step, a few pellets of program to identify and evaluate candidate solvents is currently potassium hydroxide should be placed in the distillation flask underway in Subcommittee D Procedure 8. Check Procedure 9. Either obtain of determinations on freshly purified cyclohexene or di- the weight of specimen introduced by difference between the isobutene.
Warning—The user of this test method may weight to the nearest 1 mg of the flask before and after choose to use either 1,1,1-trichloroethane or dichloromethane to the exclusion of the other solvent. The selected solvent is to 5 be used for all operations, that is, in the preparation of the The sole source of supply of No. P diisobutene known to the committee at this time is Eastman, Rochester, NY. If you titration solvent, for the dilution of samples, and as the titration are aware of alternative suppliers, please provide this information to ASTM blank.
Proceed in accordance with Section 9, using a sample International Headquarters. Your comments will receive careful consideration at a of either 0. Grace and Company, Davison Chemical Division, materials in 1,1,1-trichlorethane. Baltimore, MD Your comments will receive 8. Fill the flask specimen and incorporating molecular weight of to the mark with the selected solvent and mix well.
Precision and Bias7 9. In this case, a trial test is mined by the statistical examination of interlaboratory test recommended using a 2-g specimen in order to obtain the results is as follows: approximate magnitude of the bromine number. This explor- Switch on the titrimeter, and allow the electrical circuit to become stabilized. Switch on the stirrer and adjust to a rapid the long run, exceed the following values only in one case in stirring rate, but avoid any tendency for air bubbles to be drawn twenty: down to the solution.
Petroleum Distillates: 9. Commercial olefins:8 9. The endpoint of the titration has no bias because the value of bromine number can be is achieved when the potential reaches the pre-set value see defined only in terms of a test method. NOTE 4—The precision of this test method was determined using 9. Do this by repeating 9. It is not known whether the precision estimates are each blank determination, substituting 5 mL of the selected applicable when using dichloromethane in place of 1,1,1-trichloroethane.
Less than 0. Keywords solution should be required. If more than 0. Calculation By this definition, bromine consumed by presence of bromine imposes an element of uncertainty in the addition, substitution, oxidation, and reactions with sulfur, interpretation of results. A knowledge of the material being nitrogen, and oxygen-containing compounds is included in the handled and its response to bromine greatly reduces the risk of bromine number of the material. The use of the bromine misinterpretation.
Decreasing temperature of reaction, time of procedure. These data, which were submitted by cooperators, contact, and concentration of free bromine tend to retard both are presented in Table A1.
Other factors, such as solvent medium, extent of agitation, and exposure to actinic A1. It is recognized that the bromine number data A1. For this reason, the conditions of amplified as more bromine number data are contributed by bromine number tests are usually established on an empirical cooperators. B Phillips research grade product.
C Phillips pure grade product, distilled, heart-cut percolated through Si gel. E Dow Research Chemical. F Purity not stated. G Approximate value. H Hercules Inc. I From Penn State University. J Eastman white label product, distilled, mm pressure just prior to test.
K M C and B chemical. Purity determined by GC, impurities not identified.