1、 c- ANSI PH4.189 84 a 0724350 0031278 L American National Approval of an American National Standard requires verification by ANSI that the re- quirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgme
2、nt of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Sub- stantial agreement means much more than a simple majority, but not necessarily unadim- ity. Consensus requires that all views and objections be considered, and that a
3、concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from man- ufacturing, marketing, purchasing, or using products, processes, or proce
4、dures not con- forming to the standards. The American National Standards Institute does not develop standards and will in no cir- cumstances give an interpretation of any Amercan National Standard. Moreover, no per- son shall have the right or authority to issue an interpretation of an American Nati
5、onal Standard in the name of the American National Standards Institute. Requests for idter- pretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The
6、 procedures of the American National Standards Idstitute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of approval. Purchasers of American National Standards may receive current infor- mation on all standards by calling or writing
7、the American National Standards Institute. Standard Published by American National Standards Institute 1430 Broadway, New York, New York 10018 Copyright O 1984 by American National Standards Institute, Inc Ali rights reserved. No part of this publication may be reproduced in any form, in an electron
8、ic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America A5C1 18415 ANSI PH4-187 84 SBI 0724350 0033279 3 ANSI/ASC PH4.189-1984 American National Standard for Photography (Chemicals) - Ferric Ammonium Ethylenediamine - tetraacet
9、ate Solution and Sodium Ferric Et hylenediaminetetraacetate Trihydrate Secretariat National Association of Photographic Manufacturers, Inc Approved August 7, 1984 American National Standards Institute, Inc ANSI PH4-389 84 II 0724350 0033280 T Foreword (This Foreword is not part of American National
10、Standard ANSIIASC PH4.189-1984.) American National Standard for Photography (Chemicals) - Ferric Ammonium Ethylene- diaminetetraacetate Solution and Sodium Ferric Ethylenediaminetetraacetate Trihydrate, ANSI/ASC PH4.189-1984 is one of a series of American National Standards covering many aspects of
11、the subject of photography. At the present time, there are seven commit- tees working on the various standardization problems in this field. It was in 1938 that standardization work in the field of still photography was first initi- ated under the procedures of the American Standards Association, no
12、w known as the American National Standards Institute. The committee that was organized to carry on this work was designated as the ASA Sectional Committee on Standardization in the Field of Photography, 238. This committee continued to operate for over ten years, under the sponsorship of the Optical
13、 Society of America, and was responsible for the development of weil over a hundred American National Standards in the photographic field. In 1950, it became apparent that it was not feasible for one committee to handle such a large assignment, and, on November 30,1950, ASA Committee 238 was disband
14、ed and four new committees were organized to replace it. Three additional committees have since been organized. The Accredited Standards Committee on Photographic Processing, PH4, which developed this standard, is one of the seven photographic committees. It is sponsored by the Na- tional Associatio
15、n of Photographic Manufacturers, Inc. In addition to participating in the national standardization program, the PH4 Committee is also concerned with the work being carried on by ANSI as Secretariat for Technical Committee 42 on Photog- raphy of the International Organization for Standardization (ISO
16、). The National Associa- tion of Photographic Manufacturers, Inc, has been appointed to act for the Secretariat. Suggestions for improvement of this standard will be welcome. They should be sent to the National Association of Photographic Manufacturers, Inc, 600 Mamaroneck Avenue, Harrison, NY 10528
17、, This standard was processed and approved for submittal to ANSI by Accredited Stan- dards Committee on Photographic Processing, PH4. Committee approval of the standard does not necessarily imply that ali members voted for its approval. At the time it ap- proved this standard, the PH4 Committee had
18、the following members: Kenneth M. Smith, Chairman Clifford M. Keating, Vice Chairman Richard Hittner, Secretary Organization Represented Name of Representative Canadian Standards Association (Liaison) . . . , , . . . . , . . . . , . . . . . , Alfred P. Huerter Donald C. Ferguson (Alt) Philip A. Hunt
19、 Chemicals Corporation . , . . . . . . . . . . . . . . . . . , . . . Edward C. Saunders Alan A. Bornstein (Alt) National Association of Photographic Manufacturers, Inc . . . . . . . . . . . . Richard S. Fisch Norman Newman (Alt) James D. Grooters Richard W. Kulus (Ait) James J. Hartigan Ronald A. Kl
20、ein (Alt) Peter Krause Eric M. Neff Melvern C. Taylor (Alt) Kenneth M. Smith Thomas N. Jones III (Alt) John J. Surash Daniel Owerbach (Ait) 8 o a ANSI PH4.187 BLt II 0724350 0013281 Z Organization Represented Name of Representative Photographic Society of America, Inc . Grant Hakt Professional Photo
21、graphers of America. Robert M. Opfer Society of Motion Picture and Television Engineers . (Representation Vacant) Alex E. Aiden (Alt) Society of Photographic Scientists and Engineers. Wiiliam R. Towns Clifford M. Keating (Ait) U.S. Department of the Air Force . John H. Kaufhold, JI Walter R. Kraus (
22、Ait) U.S. Department of the Army. . Calvin F. Douglas Thomas J. Mackesy (Ait) U.S. Department of the Navy Herbert J. Garner John W. Sarraga (Ait) U.S. General Services Administration - Office of Federal Supply and Services Georgia L. Apostolou Individual Member Spencer B. Fulweiier Subcommittee PH4-
23、1 on Specifications for Photographic Chemicals, which was responsible for the development of this standard, had the following members: John J. Surash, Chairman Charles J. Battaglia Janet M. Carlock Donald T. Culley Jeffrey E. Fisher Spencer B. Fuheiier James J. Hartigan Richard Hittner Thomas N. Jon
24、es III Irving O. Kemp Ronald A. Klein William E. Lee Gail B. C. Marsella Robert J. Michalowski Eric M. Neff Norman Newman John M. Para Arthur S. Pavlidis Kenneth M. Smith William R. Towns Andrew Turner ANSI PH4.183 84 m 0724LSU CIOLL282 3 m SECTION PAGE Introduction 5 Contents . 1 . Scope . 5 2 . Re
25、ferenced American National Standard 5 3 . General Information . 5 3.1 Physical Properties . 5 3.2 Hazardous Properties . 5 3.3 Handling and Storage Conditions . 5 4 . Summary of Requirements . 5 . Reagents, Materials, and Glassware 6 5.1 Reagents . 6 5.2 Water . 6 5.3 Glassware . 6 6 . Testprocedure
26、s . 6 7 . TotalActiveIron 6 7.1 Reagents 6 7.2 Test Procedure . 7 8 . FerrousIon . 7 8.1 Reagents 7 8.2 Test Procedure . 7 5 9 . FreeEDTAAcid 7 9.1 Reagents. 7 9.2 Test Procedure . 7 10.1 Reagents . 8 10.2 Testprocedure., . 8 10 . Total EDTA Acid . 8 11 . pH at 20C Table 1 Summary of Requirements 6
27、8 12 . Water Insolubles 8 O a O ANSI PH4.189 84 0724350 0012283 5 American National Standard for Photography (Chemicals) - Ferric Ammonium Ethylenediamine - tetraacetate Solution and Sodium Ferric Ethylenediaminetetraacetate Trihydrate Warning and Safety Precautions Some of the chemicals specified i
28、n the test proce- dure in this standard are caustic, toxic, or other- wise hazardous. Specific caution, warning, and danger notices are given in the footnotes but, in addition, the normal precautions required during the performance of any chemical procedure must be exercised at all times. It is reco
29、mmended that anyone using these chemicals obtains from the manufacturers pertinent information about the hazards, handling, and use of these chemicals. Such information is usually furnished by the chemical manufacturer in the form of a manu- facturers material safety data sheet (OSHA Form 20 or equi
30、valent). Introduction (This Introduction is not part of American National Standard ANSIIASC PH4.189-1984.) This standard is one of a series that establishes the minimum criteria of purity for chemicals used in pro- cessing photographic materials. Although the ultimate criterion for suitability of a
31、photographic-grade chemical is its successful perfor- mance in an appropriate use test, the shorter, more economical tests described in this standard are generally adequate. 1. Scope This standard establishes criteria for the purity of pho- tographic-grade ferric ammonium ethylenediamine- tetraaceta
32、te solution (”, FeEDTA) and sodium ferric ethylenediaminetetraacetate trihydrate (NaFeEDTA- 3H2 O) and indicates the test methods to be used to determine their purity. In this standard, ethylenediaminetetraacetate acid is commonly called EDTA acid. 2. Referenced American National Standard This stand
33、ard is intended for use in conjunction with American National Standard Method for the Deter- mination of pH of Photographic Processing Solutions, and Specifications for pH Meters Used to Measure pH of Photographic Processing Solutions, ANSI PH4.36- 1978. 3. General Information 3.1 Physical Propertie
34、s. NaFeEDTA-3H2 O exists in the form of a light yellow or tan powder. The chemical formula is CHloH12FeN20s *3H20 and the relative molar mass is 421.1 1. NH4FeEDTA solution exists in the form of a dark brown-red colored liquid. 3.2 Hazardous Properties. NaFeEDTA 3Hz O and NH4FeEDTA solution are not
35、hazardous when handled with normal precautions. 3.3 Handling and Storage Conditions. These materials require no unusual handling and storage precautions beyond those involved in the use of any chemical material. 4. Summary of Requirements The requirements shall be as shown in Table 1. 5 ANSI PH4-387
36、 84 II 0724350 0031284 7 M AMERICAN NATIONAL STANDARD ANSI/ASC PH4.189-1984 Table 1 Summary of Requirements NH, FeEDTA Solution NaFeEDTAe 3H, 0 Total Active Iron, 6.2% (m/m) 12.5% (m/m) Ferrous Ion, 0.1% (m/m) NA Free EDTA Acid, 0.1% (m/m) NA Total EDTA Acid, NA 65.4% (m/m) pH at 20C 6.5 to 8.5 3.8
37、to 6.0 solution) Water Insolubles, NA 0.3% (m/m) Minimum Maximum Minimum Minimum (1% by weight Maximum NOTES: (i) m/m = mass per mass (2) NA = not applicable 5. Reagents, Materials, and Glassware 5.1 Reagents 5.1.1 Reagents shall be handled in conformity with health and safety precautions as shown o
38、n containers or as given in other sources of such information. Proper labeling of prepared reagents includes adequate health and safety precautions. The discharge of reagents shall conform to applicable environmental regulations. 5.1.2 Reagents used in the test procedures shall be certified reagent-
39、grade chemicals and shall meet the specifications given in Reagent Chemicals published by the American Chemical Society (ACS) in 1981 or chemicals of a purity acceptable for the analysis. The acids and ammonia solutions referred to in all the in- structions shall be of full strength unless dilution
40、is specified. Dilution is specified in terms of molarity, M, when standardization is required. The number of significant figures to which molarity is known shall be sufficient to ensure that the reagent does not limit the reliability of the test method. When dilution is indicated as (i t X), it mean
41、s that one volume of the reagent or strong solution is added to X volumes of distilled water. 5.2 Water. Whenever water is specified in the test pro- cedures, only distilled water or water of at least equal purity shall be used. 5.3 Glassware. All glassware subject to heating shall be of heat-resist
42、ant glass; for example, Pyrex or equiva- lent. i Available from American Chemical Society, 1155 Sixteenth Sfreet, My, Washington, DC 20036. 6 6, Test Procedures Tests shall be made on the samples in their “as re- ceived” condition. The test procedures described in Sections 7 through 12 shall be foll
43、owed to determine whether the test sample meets the purity requirements listed in Section 4. In the last several years there have been great im- provements in instrumentation for various analyses. Where such techniques have the equivalent accuracy and precision, they may be used in place of the test
44、s described in this standard. 7. Total Active Iron NH4FeEDTA Solution, 6.2% (m/m) Minimum NaFeEDTA- 3H20, 12.5% (mlm) Minimum 7.1 Reagents acid2 and 10 mL of perchloric chloric acid to the nitric acid, Add to this mixture 5 mL of sulfuric acid.2 grams of monochloroacetic acid in approximately 800 mL
45、 of water. Adjust the pH to 3.0 with sodium hydroxide solution (500 g/L) and dilute with water to one liter. 7.1.1 Oxidizing Acid. Mix together 24 mL of nitric adding the per- 7.1.2 Monochloroacetic Acid Buffer. Dissolve 100 7.1.3 EDTA, 0.1 Molar 7.1.3.1 Preparation of 0.1 Molar EDTA Solution. Disso
46、lve 37.5 grams of disodium ethylenediaminetetra- acetate dihydrate (NaEDTA. 2H2 O) in approximately 800 mL of water. Dilute with water to one liter in a volumetric flask. Solution. Weigh 0.200 gram f 0.1 mg calcium carbon- ate anhydrous (CaC03) and add to 250 mL of dilute hydrochloric acid2y4 (1 t 3
47、) in a 500-mL Erlenmeyer, or conical, flask and swirl to dissolve the calcium car- bonate. Rinse down the sides of the flask and add ap- proximately 100 mL of water. From a buret, deliver approximately 15 mL of the solution (7.1.3.1) to be standardized into the flask then add 15 mL of sodium hydroxi
48、de solution2 (4 g/L) and 0.03 gram hydroxy- 7.1.3.2 Standardization of 0.1 Molar EDTA , DANGER! Corrosive, causes burns. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. In case of contact, flush eyes and skin with water. Obtain medical atten- tion immediately. 3DANGER! O
49、xidizer. Contact with other material may cause fire. Do not store near combustible materials. DANGER! Harmful if inhaled. Avoid breathing dust, vapor, mist, or gas. Use only with adequate ventilation. If inhaled, move to fresh air. Obtain medical attention immediately. ANSI PH4.189 84 I 0724350 OOLL285 7 m AMERICAN NATIONAL STANDARD ANSI/ASC PH4.189-1984 naphthol blue indicator and titrate with the solution (7.1.3.1) to be standardized to a blue end point. Molarity of EDTA - (grams of calcium carbonate) (9.991) mL of EDTA 7.2 Test Procedure.
