ANSI-IT4.206-1984.pdf
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1、A N S I PH4.206 84 0724350 00333L4 3 7 3CJT ANS I/ASC PH4.206-1984 Revision of ANSI PH4.206-1977 f . I American National Standard 1 for photography (chemicals) - 5-nitrobenzimidazole nitrate ( Approved January 24, 1984 Secretariat: National Association of Photographic Manufacturers, Inc I Warning an
2、d Safety Precautions Some of the chemicals specified in the test proce- dures of 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 chemic
3、al procedure shall be exercised at all times. It is recommended 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- fa
4、cturers material safety data sheet (OSHA Form 20 or equivalent). Page 1 of 4 pages Introduction (This Introduction is not part c ANSI/ASC PH4.206-1984.) herican Nation; S t andan This standard is one of a series that establishes criteria of purity for chemicals used in processing photographic materi
5、als, Although the ultimate criterion for suitability of a photographic-grade chemical is its successful perfor- mance in an appropriate photographic use test, the shorter, more economical tests described in this stan- dard are generally adequate. This standard is a revision of American National Stan
6、dard Specification or Photographic Grade 5-Nitro- benzimidazole Nitrate, ANSI PH4.206-1977. In this latest revision, the section on physical appearance has been replaced with a section on general information, minor changes in precaution notations have been made, the solution appearance test has been
7、 modified, and the general format has been changed to be in agree- ment with the style outlined in the Directives for the Technical Work of the International Organization for Standardization (ISO). An American National Standard implies a consensus of those substantially concerned with its scope and
8、provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Stan- dard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purcha
9、sing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. The American National Standards Institute does not develop standards and will in no circumstances give a
10、n interpretation of any American National Standard. Moreover, no person shaii have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. CAUTION NOTICE: This American National Standatd may be revised or withdrawn
11、at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of ap- proval. Purchasers of American National Standards may receive current information on all standards by cal
12、ling or writing the American Na- tional Standards Institute. Copyright 01984 by American National Standards Institute, 1430 Broadway, New York, N.Y. 10018 Ff Y, ANSISC584/4 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokos
13、uka/9961031100 Not for Resale, 05/09/2007 01:39:59 MDTNo reproduction or networking permitted without license from IHS -,-,- A N S I PHi*20b 84 0724350 0033335 3 Page 2 of 4 pages 1. Scope This standard establishes criteria for the purity of photographic-grade 5-nitrobenzimidazole nitrate and descri
14、bes the tests to be used to determine the purity. 2. General Information 2.1 Physical Properties. 5-nitrobenzimidazole nitrate. is a white to cream-colored powder. The chemical for- mula is C7 H6 N4 O5 and the relative molar mass is 226.13. 2.2 Hazardous Properties. 5-nitrobenzimidazole nitrate pres
15、ents low skin and respiratory hazards. 2.3 Handling and Storage Conditions. hitrobenzimid- azole shall not be stored for prolonged periods at tem- peratures above 38C (100F) or exposed to relative humidities greater than 75%. 3. Suminary of Requirements Assay: Appearance of 0.5% Aqueous Solution: Re
16、sidue after Ignition (600C 1 : 25C): Volatile Matter (70C): Identity : NOTE: m/m = mass per mass 4. Reagents and Materials 99.0% (m/m) minimum 1 O i .O% (m/m) maximum To pass test 0.3% (m/m) maximum 0.3% (m/m) maximum To pass either the melt- ing-point test (204C to 207C) or have es- sentially the s
17、ame infrared absorption curve as that of the reference spectrum 4.1 Reagents 4.1.1 Reagents shall be handled in conformity with health and safety precautions as shown on containers or as given in other sources of such information. Proper labeling of prepared reagents includes adequate health and saf
18、ety precautions. The discharge of reagents shall conform to applicable environmental regulations. 4.1.2 Reagents used in the test procedures shall be certified reagent-grade chemicals and shall meet the specifications given in Reagent Chemicals, published by the American Chemical Society (ACS) in 19
19、8 1, or chemicals of a purity acceptable for the analysis. The acids and ammonia solutions referred to in all instruc- tions shall be of full strength unless dilution is specified. Dilution is specified in terms of normality, N, when standardization is required. The number of significant figures to
20、which normality is known shall be sufficient to ensure that the reagent does not limit the reliability of the test method. When dilution is indicated as (1 t X), it means that one volume of the reagent or strong solution is added to X volumes of distilled water. 4.2 Water. Whenever water is specifie
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