Reagents. Specifications Reagents
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STATE STANDARD OF THE UNION OF THE SSR
REAGENTS
AMMONIUM SULPHATE
Type and type of container: 2-1, 2-4, 2-9.
Packing group: III, IV, V, VI.
The container is labeled with a danger sign. GOST 19433(class 9, subclass 9.1, classification code 9163).
5.2. The drug is transported by all means of transport in accordance with the rules for the carriage of goods in force on this type of transport.
5.3. The drug is stored in the manufacturer's packaging in covered warehouses.
6. MANUFACTURER WARRANTY
6.1. The manufacturer guarantees the compliance of ammonium sulphate with the requirements of this standard, subject to the conditions of transportation and storage.
6.2. Guaranteed shelf life - three years from the date of manufacture.
Sec. 6. (Changed edition, Rev. No. 1).
Electronic version
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Chemical Industry
DEVELOPERS
G.V. Gryaznov, T.G. Manova, I.L. Rotenberg, Z.M. Rivina, Z.M. Sulman, G.I. Fedotova, L.V. Kidiyarova
2. APPROVED AND INTRODUCED BY Decree State Committee standards of the Council of Ministers of the USSR of July 17, 1978 No. 1911
4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
Number of paragraph, subparagraph
4.2.1, 4.3.1, 4.5, 4.10.1, 4.14
4.2.1, 4.10.1, 4.11.1
4.2.1, 4.10.1, 4.14
4.3.1, 4.10.1, 4.11.1
4.2.1, 4.3.1, 4.10.1, 4.11.1, 4.14
Electronic version
5. The limitation of the validity period was removed according to protocol No. 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)
6. REPUBLICATION (August 1997) with Amendment No. 1 approved in September 1988 (IUS 1-89)
Editor M.I. Makashova Technical editor V.N. Prusakova Proofreader N.L. Schneider Computer layout V.I. Grishchenko
Ed. persons. No. 021007 dated 10.08.95. Handed over to the set 18.09.97. Signed for publication on 23.10.97. Uel. oven l. 0.93. Uch.-ed. l. 0.83. Circulation 108 copies. 0033. Order 753.
IPK Standards Publishing House, 107076, Moscow, Kolodezny per., 14.
Typed in the Publishing House on a PC Branch of the IPK Publishing House of Standards - type. "Moscow printer" Moscow, Lyalin per., 6.
Plr No. 080102
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Meaning | |||
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Name of indicator |
Chemically pure (chemically pure) OKP 26 2116 0663 10 |
Pure for analysis (analytical grade) OKP 26 2116 0662 00 |
OKP 26 2116 0661 01 |
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1. Mass fraction of ammonium sulfide (NH 4) 2 S0 4,%, not less than | |||
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2. Mass fraction of substances insoluble in water,%, no more | |||
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3. Mass fraction of the residue after calcination,%, no more | |||
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4. Mass fraction of nitrates and chlorates (N0 3),%, no more | |||
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5. (Deleted, Rev. No. 1). 6. Mass fraction of phosphates (P0 4),%, no more | |||
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7. Mass fraction of chlorides (C1),%, no more | |||
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8. Mass fraction of iron (Fe),%, no more | |||
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9. Mass fraction of calcium (Ca),%, no more |
Not standardized |
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10. Mass fraction of magnesium (Mg),%, no more |
Not standardized |
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11. Mass fraction of arsenic (As),%, no more | |||
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12. Mass fraction heavy metals(Рb), %, no more |
Not standardized |
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13. pH of the drug solution with a mass fraction of 5% |
(Revised edition, Rev. No. 1).
2. SAFETY REQUIREMENTS
2.1. Ammonium sulphate (in large quantities) can cause irritation of the mucous membrane and skin.
2.2. When working with the drug should be used individual means protection (respirators, rubber gloves, goggles), as well as observe the rules of personal hygiene. If the drug gets on the skin or in the eyes, wash it off large quantity water.
GOST 3769-78 S. 3
2.3. Premises in which work with the drug is carried out must be equipped with general supply and exhaust ventilation. The analysis of the drug should be carried out in a laboratory fume hood.
(Revised edition, Rev. No. 1).
3. ACCEPTANCE RULES
3.2. The determination of the mass fraction of phosphates, calcium, magnesium, arsenic and heavy metals is carried out by the manufacturer in every 20th batch.
4. METHODS OF ANALYSIS
4.1a. General instructions for conducting the analysis - according to GOST 27025.
When weighing, laboratory scales of the 2nd accuracy class with the highest weighing limit of 200 g and 3rd class of accuracy with the highest weighing limit of 500 g or 1 kg are used. GOST 24104.
It is allowed to use imported equipment according to the accuracy class and reagents in quality not lower than domestic ones.
(Introduced additionally, Rev. No. 1).
Stopwatch.
Cylinder 1(3)-50 or Beaker 50's GOST 1770.
Distilled water, not containing carbon dioxide; cook according to GOST 4517.
Electronic version
Rectified ethyl alcohol technical grade GOST 18300, top grade.
Phenolphthalein, an alcohol solution with a mass fraction of 1%, is prepared according to GOST 4919.1.
Filtering crucible TF POR or TF POR 16 according to GOST 25336.
4.3.2. Conducting an analysis
50.00 g of the drug is placed in a glass and dissolved by heating in 300 cm 3 of water. The glass is covered with a watch glass, heated
GOST 3769-78 S. 5
for 1 h in a water bath, then the solution is filtered through a filter crucible, previously dried to constant weight and weighed. The result of weighing the crucible in grams is recorded to the fourth decimal place.
The residue on the filter is washed with 100 cm 3 of hot water and dried in an oven at 105-110 °C to constant weight.
The drug is considered to comply with the requirements of this standard if the mass of the dried residue does not exceed: for the chemically pure drug - 1.0 mg, for the drug pure for analysis - 1.5 mg, for the pure drug - 5.0 mg.
The result of the analysis is taken as the arithmetic mean of the results of two parallel determinations, the relative discrepancy between which does not exceed the allowable discrepancy of 30%.