HG/T 3014-1999 Specification for Sodium Tetraborate Decahydrate for Photographic Processing Chemicals
Some standard content:
IC837.040.30
Chemical Industry Standard of the People's Republic of China
Photography
Processing Chemicals
(1999)
Published on 1999.06-16
Implementation on 2000-06-01
Published by the State Bureau of Petroleum and Chemical Industry
International Electrotechnical Commission (ISO) is a joint organization of international standard bodies (ISO member bodies). The work of formulating international standards is completed by a technical committee. Member bodies interested in disciplines that have not yet established technical committees have the right to participate in the committee's submission. Governmental or non-governmental international organizations may also participate in the work after contacting ISO. ISO cooperates with the International Electrotechnical Commission (IEC) on all matters related to the promotion of electrotechnical standards. The draft of an International Standard established by a technical committee is circulated to the member bodies for voting. Publication requires at least 75% of the votes cast by the member bodies voting. This International Standard [5O2H] was prepared by the Technical Committee for Photographic Technology. This edition replaces the first edition of ISO S28:1976, which was prepared by the Technical Committee for Photographic Technology. ISO S28:1976 is one of a series of standards that establish purity standards for chemicals used in the processing of raw materials. The general test methods and procedures used in this International Standard are taken from Sections 1, 4 and 5 of ISO 1, 3 and 4. This International Standard is intended for use by persons with certain chemical analysis skills, and does not necessarily require actual technical skills. Some tests cause the use of chemicals with other hazardous properties. When handling such chemicals in the laboratory, it is necessary to use safety glasses or mouth guards, rubber gloves and other protective products, such as suitable masks or 1. In particular, conventional protective measures need to be taken when performing chemical experiments. Warnings are also provided for various hazard materials. The hazard signs indicated by the center number are used to indicate the operation details of these procedures. This is stipulated in ISO10349-1. Regarding the hazards of such chemicals, More detailed information on the use of the treatment is provided by the manufacturer.
2 This standard sets out the chemical and physical requirements for the chemical products to be used. These tests are closely related to the quality of the photographic results. The requirements of the Institute can be set lower on the basis of ensuring the photographic effect. These standards are to ensure that the purity of the drugs used in the photosensitive process must reach the lower requirements. When the purity of the chemicals provided by the market is not high, the purity requirements are not high. When the chemicals are used without economic loss, the purity requirements are allowed and high-quality materials are used. The required number of days should be minimized, the flammable substance content should be limited to no excessive testing, and all existing tests should be carried out on the "specified product model" to truly reflect the conditions of the materials provided for use. Although it is difficult for a chemical to meet the final standard, the product can be tested through appropriate test methods, but the test methods obtained by using the commercial plan in the national standard are generally applicable. The test procedures have covered all available satisfactory methods. An effective test requirement cannot be used as a guarantee of chemical purity, and it provides a valuable supplement to qualitative tests. Each chemical or chemical mixture can meet the requirements of other test requirements:
The various requirements in Chapter 4 are mandatory, and the physical appearance of the material and any footnotes are for general information only. D.3 Try to use tests that can be performed in experiments with standard equipment , the purpose is to avoid the need for specialized equipment or technology tests, instrumental analysis is only specified as an alternative method or a method that can be used quickly when there are no other satisfactory methods available.
In recent years, various chemical analysis methods have made great progress in the field of energy chemistry. As long as these new technologies have a single or higher material density, they can replace the acid test method adopted in the national standards. Standard users should study and compare the relationship between the method and the quality method. When the test station adopts a method, the method specified in the technical conditions shall prevail. In addition, when the technical requirements stipulate that\tests\, the alternative method should not be used.
1 Scope
Chemical Industry Standards of the People's Republic of China
Technical Processing Chemicals
Specifications for Sodium Tetraborate Decahydrate
PhotngrapiyProcessing chemicalsSpecificationg for sedlum tetraborute dcealhydrrteHG/T3014-1999
ilt1503621:1994()
Agent 1IG/ C14 1S8S
This standard specifies the requirements and test methods for sodium tetraborate decahydrate, a chemical used in the process of molten metallurgy. 2 Referenced standards
The following standards contain provisions that constitute the text of this standard by reference in this standard: The versions indicated are valid at the time of publication of this standard. All standards are subject to revision, and parties using this standard should consider the possibility of using the old and new versions of the standards. GB/T619-88 Sampling and acceptance rules for chemical reducers HG/T26321994 General test methods for disintegration-grade chemicals ID1JS () 1039: 1992 3 Basic properties
3.1 Physical properties
Sodium tetraborate decahydrate NaB () :-10HO) Total white powder or coated product, with a molecular weight of 381.73.2 Hazards
3.2.1 Sodium tetraborate decahydrate is dangerous under normal conditions and requires protection. 3.2.2 Certain chemicals used in the test methods specified in the following parts of this standard require the use of protective clothing, rubber gloves and other protective equipment, such as appropriate protective gear. In the test methods and notes of this standard, special hazardous substances are warned of danger. However, normal protective measures must be taken at any time when any chemical operation is performed. Hazardous substances are indicated in the test methods specified in the subsequent parts of this standard. Hazards are indicated by the two letters "danger". The letter "danger" is accompanied by a double letter "" to indicate a particularly dangerous situation. The letter "" is used to indicate the type of hazard. In the test methods, only the hazard symbol consisting of brackets and an English letter is shown, and the hazard symbol is used in the following paragraphs. The hazard symbols specified in this standard only provide information to the user and do not represent the formal hazard labeling requirements, because the requirements in this regard vary from country to country: 3.2.3 Hazard symbols are not directly applicable. Avoid contact with eyes, skin or clothing. Wash thoroughly after handling. 3.3
Sodium tetraacetic acid decahydrate can be stored in a container at room temperature. National table petroleum and chemical industry 1999-06-16 approved 2000-6-01 buy bottle
4 requirements
The requirements for products are shown in Table 1.
IHG/T 3D14-1999
Table 1
Spot limit
%
Residual (in terms of Pb,
Fe I) content, >
Normal liquid appearance
Reagents and glassware
C C2 (, the amount of fraction
n.ns (measurement cover stock)
Through injection method clinical
9. 14 ~9.31
Transparent, without disrespect, responsible for light capital donation. The relevant provisions of the standard
provide a test formula
year standard
HG/T 25321954 Chapter 7
1004 Chapter 7
[1G/2032-1991 Chapter
All reagents, materials and glassware in this standard shall comply with HG/T2632:991
6 Sampling
According to G/613, the sampling and testing of the light fruit
7 Test method
7.1 Hydration tetrahydrofuran (H2O-10H0): 95% (mass fraction). 7.1.2 Reagents and materials 7.7 1.2.1 Glycol (CI). 7.1.2.2 Ethanol (C,H,OH): 95%. 7.1.2.3 Monobasic red indicator solution. Dissolve 0.1 mL of ethyl acetate in 5 mL of ethyl acetate. 7.1.2.4 Ingredients: Dissolve 5 g of ethanol in 5 mL of ethanol, dilute to 100 mL with water, and filter if necessary. 7.7.2.5 Sodium chloride (NaO11), standard solution 0.5 mol/L (2 U.10 g/L). 7.1.2.6 Sulfuric acid (II, SO,(1 45)
7.1.3 Apparatus and equipment
7.1.3.7 Volumetric flask with single label: 1T.,
7.1.3.2 Grid flow piece, 50mL.
7.1.3.3 Full volume, 5U.Uml..
7.1.4 Make provisions for
.
Collect about 20g of sample (accurate to C.11. 1. Dissolve in water and dilute to the scale, the solution can be used for FF value determination (7.5) add 50.0ml of the solution into a 250mL beaker, at room temperature, use a glass beaker, boil for 10min, without cooling, rinse the attached substances on the surface with water. Note:
1) The analytical agent can be easily replaced by sodium hydroxide, and the solution can be used as a whole. C> The solution is reduced, 2> The solution is 1.4R/m, (Case study: 3C. Preparation 22
03014-1999
, add 6 drops of red base to the baking soda, add 1 ml of sodium hydroxide standard titration solution under low temperature, and use a titration tube to titrate with sodium hydroxide standard titration solution until the color of the solution changes from red to light brown. Do not record the volume of the standard solution, then add 1.5 ml of sodium hydroxide standard titration solution to dissolve it, add 12 drops of phenol as indicator solution, and titrate with sodium hydroxide standard titration solution. When the solubility limit changes from white to white and then to pink, it is the end point. Record the volume of the standard solution and calculate the number of solutions. 7. 1- 5 i calculate
Na,T,(),·10H1,0 white content of the maximum = 190.70)?
formula center "the standard full set of chemical energy box reduction of the actual original policy, ugly l/; to reach the titration point consumption of sodium oxide standard agreed to fall Qian of the accompanying product, proof: m a sample quality scene,
190.7——1 mol sodium oxide equivalent to the conversion coefficient of tetrahydrofuran decahydrate (ie 95.35/2: with granular sodium oxide flow 1 1mc1 sodium tetraaldehyde reacts with 2-hydroxyethyl alcohol to generate 2mM 2 (mM) × mL to convert to 1mM (mM) × mL to convert to 1mM (mM) × mL to convert to 1mM (mM) × mL to convert to 1mM (mM) × mL to convert to 1mM (mM) × mL to convert to 1mM (mM) 7.2 Determination of total amount of gold (in Ph) 7.2.1 Requirements
|| || || || || 7.2-2 Operation steps
| ... The 7th rate of HG/T2632-1994 is used to determine the percentage of heavy metals by weight. Take 1.NU~.2.1Vg sample, heat the sample according to 7.3.1.2 of HG/25321994, and use 4mT. egg gold temperature scale to prepare the standard sample of miscellaneous materials according to 7.3.2. of HG/T2632-1994. The 7.3.1 requirement of 3 iron content is 5.003%. (mass fraction). www.bzxz.net
7.3.? Operation steps
Determine the soft component content according to Chapter 7 of HG/2682-991. Weigh 1.90~2.106 of the sample. Prepare the sample according to 7.3.1.% of HG/T2632-194. Use 6ml of quick standard solution, and prepare each impurity standard test solution according to 7.3.2.1 of HG/T2632-194. 7.4 react with nitric acid
7. 4. 1 Requirements
Reverse test.
7.4.2 Operation
Determine the reactivity with chlorine according to Chapter T of [IG/T2632-1994]. 7.5 pH value 7.3.1 Requirement PH = S. 14 ~ -. 34. 7.5.2 Equipment and devices should be used as laboratory instruments, especially the design or design, and equipped with a complete set of standard reference electrodes. 7.5.3 Prohibited steps Collect 100mL of 20$/1. solution prepared according to 7.1.4, and use the manual to increase or decrease the pH value by 2: 7.6 Liquid appearance 7.5.1 Requirements 30141999 The solvent should be transparent and free of solids, and light coagulants are allowed. 7.6.2 Procedure
Collect 2/L of the sample solution prepared according to 7.1.4 and observe the color of the solution and whether the solution is clear.
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