ASTM E50 - 17

    Standard Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

    Active Standard ASTM E50 | Developed by Subcommittee: E01.20

    Book of Standards Volume: 03.05


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    Significance and Use

    4.1 The inclusion of the following paragraph, or a suitable equivalent, in any standard (preferably after the section on Scope) is due notification that the apparatus and reagents required in that standard are subject to the recommendations set forth in these practices.

     

    Apparatus and Reagents—Apparatus and reagents required for each determination are listed in separate sections preceding the procedure. Apparatus, standard solutions, and certain other reagents shall conform to the requirements prescribed in ASTM Practices E50, for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials.”

     

    TABLE 1 Chemical Reagents Specified in ASTM Methods for Chemical Analysis of Metals

    Name

    Formula

    * Acetic acid

    CH3COOH

    Acetone

    CH3COCH3

    Acetylacetone (2,4-pentanedione)

    CH3COCH2COCH3

    Alizarin-Red-S

    C6H4COC6H-1,2-(OH)2-3-SO3NaCO

    Aluminon (aurintricarboxylic acid-ammonium salt)

    (4-HOC6H3-3-COONH4)2C:C6H-3-(COONH4):O

    Aluminum metal (99.9 % min)

    Al

    * Aluminum metal (sheet or rolled foil)

    Al

    Aluminum ammonium sulfate

    Al2(NH4)2(SO4)4·24H2O

    Aluminum nitrate

    Al(NO3)3·9H2O

    Aluminum sulfate

    Al2(SO4)3·18H2O

    Aluminum oxide, fused (Alundum)

     

    1-Amino-2-naphthol-4-sulfonic acid

    NH2C10H5(OH)SO3H

    Ammonium acetate

    CH3COONH4

    Ammonium benzoate

    C6H5COONH4

    Ammonium bifluoride

    NH4FHF

    Ammonium bisulfate

    NH4HSO4

    Ammonium bisulfite

    NH4HSO3

    Ammonium carbonate

    (NH4)2CO3

    * Ammonium chloride

    NH4Cl

    * Ammonium citrate

    CH2(COONH4)C(OH)(COOH)CH2COONH4

    Ammonium fluoride

    NH4F

    * Ammonium hydroxideA

    NH4OH

    Ammonium iodide

    NH4I

    Ammonium molybdate

    (NH4)2MoO4

    * Ammonium heptamolybdate tetrahydrate

    (NH4)6Mo7O24·4H2O

    Ammonium nitrate

    NH4NO3

    * Ammonium oxalate

    NH4OCOCOONH4·H2O

    * Ammonium phosphate, dibasic (diammonium acid phosphate)

    (NH4)2HPO4

    * Ammonium persulfate (ammonium peroxydisulfate)

    (NH4)2S2O8

    * Ammonium sulfate

    (NH4)2SO4

    * Ammonium tartrate

    NH4OCO(CHOH)2COONH4

    Ammonium thiocyanate

    NH4SCN

    Ammonium vanadate

    NH4VO3

    Antimony metal (powder)

    Sb

    Antimony trichloride

    SbCl3

    * Arsenic trioxide

    As2O3

    Asbestos (for use with Gooch crucible)

     

     

     

    Barium Chloride

    BaCl2·2H2O

    Barium diphenylamine sulfonate

    (C6H5NHC6H4-4-SO3)2Ba

    * Benzoic acid

    C6H5COOH

    α-Benzoin oxime (benzoin anti-oxime)

    C6H5CHOHC:NOHC6H5

    Beryllium sulfate

    BeSO4·4H2O

    Bismuth metal (99.9 % min)

    Bi

    Boric acid

    H3BO3

    Bromocresol green (3′,3",5′,5"-tetrabromo-m-cresolsulfonephthalein)

    C6H4SO2OC(C6H-3,5-Br2-2-CH3-4-OH)2

    Bromocresol purple (5′,5"-Dibromo-o-cresolsulfonephthalein)

    C6H4SO2OC(C6H2-3-CH3-5-Br-4-OH)2

    Bromine (liquid)

    Br2

    Bromophenol blue (3′,3",5′,5"-tetrabromophenolsulfonephthalein)

    C6H4SO2OC(C6H2-3,5-Br2-4-OH)2

    1-Butanol

    CH3CH2CH2CH2OH

    Butyl acetate (normal)

    CH3COOCH2CH2CH2CH3

     

     

    * Cadmium chloride

    CdCl2·21/2 H2O

    Cadmium chloride, anhydrous

    CdCl2

    * † Calcium carbonate (low-boron)

    CaCO3

    Carbon dioxide (gas)

    CO2

    Carbon dioxide (solid)

    CO2

    Carbon tetrachloride

    CCl4

    Carminic acid

    1,3,4-(HO)3-2-C6H11O6C6COC6H-5-COOH-6-OH-8-CH3CO

    * Chloroform

    CHCl3

    Cinchonine

    C19H22N2O

    Citric acid

    HOC(COOH)(CH2COOH)2

    Cobalt metal

    Co

    Cobalt sulfate

    CoSO4

    Coke

     

    Congo red test paper

     

    Copper metal (99.9 % min)

    Cu

    * Copper metal (powder or turnings)

    Cu

    Copper metal (P-free)

    Cu

    Copper metal (Mn, Ni, and Co-free, less than 0.001 % of each)

    Cu

    Copper-rare earth oxide mixture

     

    m-Cresol purple (m-cresolsulfonephthalein)

    C6H4SO2OC(C6H3-2-CH3-4-OH)2

    Cupferron

    C6H5N(NO)ONH4

    Cupric chloride

    CuCl2·2H2O

    * Cupric nitrate

    Cu(NO3)2·3H2O

    * Cupric oxide (powder)

    CuO

    Cupric potassium chloride

    CuCl2·2KCl·2H2O

    * Cupric sulfate

    CuSO4·5H2O

    Curcumin

    (2-CH3OC6H3-1-OH-4-CH:CHCO)2CH2

     

     

    Devarda's alloy

    50Cu-45Al-5Zn

    Diethylenetriamine pentaacetic acid ([[(carboxymethyl)imino]bis(ethylenenenitrilo)]
     tetraacetic acid)

    ((HOCOCH2)2NCH2CH2)2NCH2COOH

    * Dimethylglyoxime

    CH3C:NOHC:NOHCH3

    N,N′ Diphenylbenzidine

    C6H5NHC6H4C6H4NHC6H5

    Diphenylcarbazide (1,5-diphenylcarbohydrazide)

    C6H5NHNHCONHNHC6H5

    * Disodium (ethylenedinitrilo) tetraacetate dihydrate

    See (ethylenedinitrilo) tetraacetic acid disodium salt

    Dithiol (toluene-3,4-dithiol)

    CH3C6H3(SH)2

    Dithizone (diphenylthiocarbazone)

    C6H5NHNHCSN:NC6H5

     

     

    Eriochrome black-T (1(1-hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic acid sodium salt)

    1-HOC10H6-2-N:N-1-C10H4-2-OH-4-SO3Na-6-NO2

    * EDTA (Disodium salt)

    See (ethylenedinitrilo) tetraacetic acid disodium salt

    * Ethanol

    C2H5OH

    * Ethyl ether (diethyl ether)

    C2H5OC2H5

    * (Ethylenedinitrilo) tetraacetic acid disodium salt

    HOCOCH2(NaOCOCH2)NCH2N(CH2COONa)CH2COOH·2H2O

    Ethylene glycol monomethyl ether (2-methoxy-ethanol)

    CH3OCH2CH2OH

     

     

    * Ferric chloride

    FeCl3·6H2O

    * Ferric nitrate

    Fe(NO3)3·9H2O

    Ferric sulfate

    Fe2(SO4)3·nH2O

    * Ferrous ammonium sulfate

    Fe(NH4)2(SO4)2·6H2O

    * Ferrous sulfate

    FeSO4·7H2O

    Fluoroboric acid

    HBF4

    Fluorescein, sodium salt

    2NaOCOC6H4C:C6H3-3(:O)OC6H3-6-ONa

    Formaldehyde

    HCHO

    * Formic acidA

    HCOOH

     

     

    Gelatin

     

    Graphite

    C

    Glass wool

     

    Glycerol

    CH2OHCHOHCH2OH

     

     

    Hydrazine sulfate

    NH2NH2·H2SO4

    * Hydrobromic acidA

    HBr

    * Hydrochloric acidA

    HCl

    * Hydrofluoric acidA

    HF

    Hydrogen chloride gas

    HCl

    * Hydrogen peroxide

    H2O2

    Hydrogen sulfide gas

    H2S

    Hydroquinone

    1,4-(OH)2C6H4

    * Hydroxylamine hydrochloride

    NH2OH·HCl

    * Hypophosphorous acidB

    H3PO2

     

     

    Invert sugar

     

    * Iodine

    I2

    Iron metal or wire (99.8 % min)

    Fe

    Isopropyl ether

    (CH3)2CHOCH(CH3)2

     

     

    Lead metal

    Pb

    * Lead acetate

    Pb(CH3COO)2

    Lead chloride

    PbCl2

    * Lead nitrate

    Pb(NO3)2

    Litmus

     

    Lithium fluoride

    LiF

     

     

    Magnesium metal (Sn-free)

    Mg

    Magnesium perchlorate, anhydrous

    Mg(ClO4)2

    * Magnesium sulfate

    MgSO4·7H2O

    Manganese metal (99.8 % min)

    Mn

    Manganous nitrate

    Mn(NO3)2

    Manganous sulfate

    MnSO4·H2O

    Mannitol

    CH2OH(CHOH)4CH2OH

    Marble chips

     

    * Mercuric chloride

    HgCl2

    * Mercury

    Hg

    * Methanol

    CH3OH

    Methyl isobutyl ketone (4-methyl-2-pentanone)

    CH3COCH2CH(CH3)2

    * Methyl orange (p[[p-dimethylamino)phenyl]azo]benzenesulfonic acid sodium salt)

    4-NaOSO2C6H4N:NC6H4-4-N(CH3)2

    Methyl purple

    formula unknown, patented

    * Methyl red (o -[[(p-dimethylamino)phenyl]azo]benzoic acid)

    4-(CH3)2NC6H4N:NC6H4-2-COOH

    Molybdenum metal (99.8 % min)

    Mo

    Molybdic acid, anhydride (molybdenum trioxide)

    MoO3

    Molybdic acid (ammonium paramolybdate)

    Assay: as MoO3—85 %

    Morin, anhydrous (2′,3,4′,7-penta hydroxyflavone)

    5,7-(HO)2C6H2 OC(C6H3-2,4-(OH)2):C(OH)CO

     

     

    β-Naphthoquinoline (5,6-benzoquinoline)

    C10H6CH:CHCH:N

    Neocuproine (2,9-dimethyl-1,10-phenanthroline)

    (CH3)2C12H6N2·12H2O

    Nickel metal (99.8 % min)

    Ni

    Nickel metal (sheet)

    Ni

    Nickelous nitrate

    Ni(NO3)2·6H2O

    Nickelous sulfate

    NiSO4·6H2O

    * Nitric acidA

    HNO3

    Nitrogen gas (oxygen-free)

    N2

    Nitrogen, liquid

    N2

    m-Nitrophenol

    NO2C6H4OH

    1-Nitroso-2-naphthol(α-nitroso-β-naphthol)

    NOC10H6OH

    Nitroso-R-salt (1-nitroso-2-naphthol-3,6-disulfonic acid disodium salt)

    1-NOC10H4-2-(OH)-3,6-(SO3Na)2

     

     

    Osmium tetraoxide

    OsO4

    Oxalic acid

    (COOH)2

    Oxygen gas

    O2

     

     

    * Perchloric acidA

    HClO4

    1,10-Phenanthroline (o -phenanthroline)

    CH:CHCH:NC:CCH:CHC:CN:CHCH:CH·H2O

    * Phenolphthalein

    C6H4COOC(C6H4-4-OH)2

    * Phosphoric acid

    H3PO4

    Piperidine

    NH(CH2)4CH2

    Platinized quartz

     

    Platinized silica gel

     

    Platinum gauze

    1. Scope

    1.1 These practices cover laboratory apparatus and reagents that are required for the chemical analysis of metals, ores and related materials by standard methods of ASTM. Detailed descriptions of recommended apparatus and detailed instructions for the preparation of standard solutions and certain nonstandardized reagents will be found listed or specified in the individual methods of analysis. Included here are general recommendations on the purity of reagents and protective measures for the use of hazardous reagents.

    1.2 These recommendations are intended to apply to the ASTM methods of chemical analysis of metals when definite reference is made to these practices, as covered in Section 4.

    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazards are given in Section 8.

    Note 1: The use of the verb “shall” (with its obligatory third person meaning) in this standard has been confined to those aspects of laboratory safety where regulatory requirements are known to exist. Such regulations, however, are beyond the scope of these practices.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1193 Specification for Reagent Water

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E77 Test Method for Inspection and Verification of Thermometers

    E100 Specification for ASTM Hydrometers

    E126 Test Method for Inspection, Calibration, and Verification of ASTM Hydrometers

    E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

    E287 Specification for Laboratory Glass Graduated Burets

    E288 Specification for Laboratory Glass Volumetric Flasks

    E438 Specification for Glasses in Laboratory Apparatus

    E542 Practice for Calibration of Laboratory Volumetric Apparatus

    E694 Specification for Laboratory Glass Volumetric Apparatus

    E969 Specification for Glass Volumetric (Transfer) Pipets

    E1044 Specification for Glass Serological Pipets (General Purpose and Kahn)

    E1621 Guide for Elemental Analysis by Wavelength Dispersive X-Ray Fluorescence Spectrometry

    ISO Standard

    DIN EN ISO 1042 Laboratory glassware -- One-mark volumetric flasks


    ICS Code

    ICS Number Code 77.040.30 (Chemical analysis of metals)

    UNSPSC Code

    UNSPSC Code 11100000(Minerals and ores and metals)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E0050-17

    Citation Format

    ASTM E50-17, Standard Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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