1、ASTM D5563 94 0759530 0540559 028 AMERICAN SOCIETY FOR TESTING AND MATERIALS 191 6 Race St.Philadelphia,Pa 191 03 Reprinted from the Annual Book of ASTM Standards.Copyright ASTM If not listed in the current combined index will appear in the n e l edition 4ib Designation:D 5563-94 Standard Test Metho
2、d for Determination of the Total Alkalinity of Sulfonated or Sulfated Oils This standard is issued under the fixed designation 0 5563;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
3、indicates the year of last reapproval.A superscript epsilon(t)indicates an editorial change since the last revision or reapproval.1.Scope 1.1 This test method covers determination of the total alkalinity of sulfonated or sulfated oils.1.2 The values stated in SI units are to be regarded as the stand
4、ard.1.3 This standard does not purport to address all o f the safety concerns,if any,associated with its use.It is the responsibility o f the user o f this standard to establish appro-priate safety and health practices and determine the applica-bility o f regulatory limitations prior to use.2.Refere
5、nced Documents 2.1 ASTM Standard:D 500 Test Methods for Chemical Analysis of Sulfonated and Sulfated Oils2 2.2 ALCA Method:H 49 Method for Total Alkalinity and Ammonia3 3.Significance and Use 3.I This test method is intended to cover determination of the total alkalinity existing in a sample of sulf
6、onated or sulfated oil,or both,by titrating a water solution of the sample with mineral acid in the presence of methyl orange as the indicator.This test method covers determination of the total alkalinity of the fixed alkali,ammonia,and triethanolamine bound as soap,free alkali,and the alkalinity of
7、 titratable alkaline salts,but not that of nontitratable alkaline s a l t s.4.Apparatus 4.1 The apparatus required consists of a glass flask pro-vided with a glass stopper and an air condenser.The connection between the flask and the condenser shall be a ground joint.Perforated glass beads shall be
8、used to prevent bumping.4.1.1 Flask-An Erlenmeyer flask(Fig.I)made of a borosilicate glass,having a capacity of approximately 300 mL and provided with a glass stopper.4.1.2 Condenser,consisting of a glass tube,915 mm(36 in.)in length and 8 mm(Y16 in.)in outside diameter.The lower end of the tube sha
9、ll be flared and ground to fit the mouth of the Erlenmeyer flask.4.1.3 Glass Beads-Perforated glass beads,made of chemically resistant glass,approximately 4 mm(V3z in.)in I This test method is under the jurisdiction of ASTM Committee D31 on Leather and is the direct responsibility of Subcommittee D
10、3 1.0 6 on Chemical Analysis-eneral.Current edition approved May 15,1994.Published July 1994.a Annual Book o f ASTM SIandardi,Vol 15.04.Cincinnati-M.L.14,Cincinnati.OH 45221-0014.Available from American Leather Chemists Association,University of diameter.Before using,the glass beads shall be boiled
11、thoroughly in several portions of water or until the wash water reacts neutral to a methyl orange indicator.5.Reagents 5.1 Ethyl Ether.5.2 Methyl Orange Indicator Solution(1 g/L)-Dissolve 5.3 Sodium Chloride(NaCl),solid.5.4 Sodium Hydroxide,Standard Solution(1 W-Accu-rately prepare and standardize a
12、 I N sodium hydroxide(NaOH)solution.Express the strength or concentration of the solution as mg of KOH per mL;i mL of 1 N NaOH solution is equivalent to 56.1 mg of KOH.5.5 Sodium Hydroxide,Standard Solution(0.5 h )-Accurately prepare and standardize a 0.5 N NaOH solution.Express the strength of the
13、solution as mg of KOH per mL;i mL of 0.5 N NaOH solution is equivalent to 28.05 mg of KOH.5.6 Sulfuric Acid,Standard(0.5 N)-Accurately prepare and standardize a 0.5 N sulfuric acid(H2S04)solution.Express the strength of the solution as mg of KOH per mL;1 mL of 0.5 N H2S04 is equivalent to 28.05 mg o
14、f KOH.5.7 Suljisric Acid(1+19)-Carefully mix 1 volume of concentrated sulfuric acid(H2S04,sp gr 1.84)into 19 volumes of water while stirring.O.1 g of methyl orange in 100 mL of water.6.Procedure 6.1 The procedure consists of two determinations:(I)alkalinity of the sample,designated as A;and(2)increa
15、se in acidity after boiling the sample with sulfuric acid,designated as F.6.1.1 Alkalinity,A-Dissolve 10 g of the sample in 100 mL of water in the 300-mL glass-stoppered Erlenmeyer flask,warming to obtain solution if necessary.After cooling,add 30 g of NaCl,25 mL of ether,and five drops of methyl or
16、ange indicator solution;then add 0.5 N H2S04,with frequent but gentle shaking,until the mixture is slightly acid.Shake the contents of the flask vigorously,and complete the titration by adding first 0.5 N NaOH solution,several drops at a time until the solution is alkaline,and then the acid,one or two drops at a time until the end point is reached.Shake the solution vigorously after each addition of reagent.Drain the burets for 3 min before taking readings.Calculate the alkalinity,A,as follows:A
