ASTM_D_216_-_77_1982_scan.pdf

9009276 0019816 8T5=Designation:D 216-77(Reapproved 1982)4Ib Designation:191/65(75)An American National Standard British Standard 4717 Standard Method for DISTILLATION OF NATURAL GASOLINE This standard is issued under the fixed designation D 216;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.This is also a standard of the Institute of Petroleum issued under the fixed designation IP 19 I.The final number indicates the year of last revision.This method was issued as a joint ASTM-IP standard in 1965.This method has been adopted for use by government agencies to replace Method 1015 o f Federal Test Method Standard No.791 b.1.Scope 1.1 This method covers the distillation of natural gasoline.NOTE 1-The values stated in inch-pound units are to be regarded as the standard.2.Applicable Documents 2.1 ASTM Standards:E 1 Specification for ASTM Thermometer?E 133 Specification for Distillation Equip-ment 3.Summary of Method 3.1 A sample of 100 ml is distilled at at-mospheric pressure without fractionation,and readings are taken of the vapor temperatures corresponding to the amounts distilled.4.Significance 4.1 Natural gasoline is so volatile that it must be handled,measured,condensed,and recovered at lower temperatures than most petroleum products.This method incorpo-rates handling and other precautions for pre-cision.4.2 An indication of the volatility blending characteristics that a natural gasoline will ex-hibit when blended with refinery stocks to make a finished gasoline is obtained from the results of this type of distillation.5.Apparatus 5.1 The apparatus listed in the following,5.1.1 through 5.1.5,shall conform to Specifi-cation E 133.flask.5.1.1 Flask-Standard 100-ml distillation 5.1.2 Condenser and Cooling Bath.5.1.3 Shield,Type 1 or 2.5.1.4 Flask Support,Type 1 or 2 with 5.1.5 Graduared Cylinder,1 00-ml.5.I.6 Gas Burner-A burner so con-structed that heat can be obtained to distill the product at the rate specified.The flame shall never be so large that it spreads over a circle of diameter greater than 4/2 in.(1 15 mm)on the under surface of the asbestos board.A sensitive regulating valve and gas pressure governor are desirable adjuncts,as they give complete control of heating.5.1.7 Electric Heater-An electric heater may be used instead of the gas burner and shall be capable of bringing over the first drop within the time specified in 8.1 when started cold,and of continuing the distillation at a uniform rate.(A heater unit of low-heat ca-pacity,adjustable from O to 750 W,has been found satisfactory).When an electric heater is employed,the portion of the shield above the board Type A.This method is under the jurisdiction of ASTM Committee D-2 on Petroleum Products and Lubricants.In the IP.this method is under the jurisdiction of the Stan-dardization Committee.Current edition approved Aug.26.1977.Published October 1977.Originally published as D216-25.Last prexious edition.4miral Book ojASTM Slandards,Vols 05.03 and 14.01.Iwiirol Book ofAS7M Standards.Vols 05.03 and 14.02.D216-54(1976).lA4 NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.-W 900927b 0019817 731=D216-191 board shall be the same as with the gas burner,but the part below the board may be omitted.5.1.8 Thermometer,having a range as shown below and conforming to the require-ments for ASTM Thermometer 7F or 7C,as prescribed in Specification E 1,or IP ther-mometer 5C.Thermometer Number Temperature Range ASTM IP-2 to+3OO0C 7c 5c 30 to 580F 7F.6.Sampling 6.1 Samples should be collected in a previ-ously cooled bottle,preferably by immersing the bottle in the liquid,where possible,and discarding the first sample.Where immersion is not possible the sample should be drawn off into a previously cooled bottle in such a man-ner that agitation is kept at a minimum.The bottle shall be closed immediately with a tight-fitting stopper,and placed in an ice bath or refrigerator capable of bringing the gasoline to a temperature of not less than 32F(OC),nor more than 40F(4.5C).7.Preparation of Apparatus 7.1 Fill the condenser bath with cracked ice(Note 2)and add enough water to cover the condenser tube.Maintain the temperature between 32 and 34F(O and 1.1C).Agitation with air gently aids in maintaining the re-quired temperature range.NOTE 2-Any other convenient cooling medium may be used.7.2 Swab the condenser tube to remove any liquid remaining from the previous test.A piece of soft,lint-free cloth attached to a cord or copper wire may be used for this purpose.7.3 Measure a 100-ml sample in the 100-ml graduated cylinder at 32 to 40F(O to 4.5C)and transfer it directly to the distil1.a-tion flask.Both the flask and the graduated cylinder shall have been cooled to a tempera-ture of from 32 to 40F(O to 4.5C)befo