Eriochrome Black T ACS reagent (indicator grade) 100G

SKU:
858390-100G
  • $33.40

    • Description

    Eriochrome Black T ACS reagent (indicator grade) 100 G

    Synonym(s):
    Mordant Black 11
    Empirical Formula (Hill Notation):
    C20H12N3NaO7S
    CAS Number:
    1787-61-7
    Molecular Weight:
    461.38
    Colour Index Number:
    14645
    Beilstein/REAXYS Number:
    4121162
    EC Number:
    217-250-3
    MDL number:
    MFCD00003935
    PubChem Substance ID:
    24888460
    NACRES:
    NA.47

    PROPERTIES

    Quality Level

    200

    grade

    ACS reagent (indicator grade)

    form

    powder

    clarity of soln

    passes test

    application(s)

    hematology: suitable
    histology: suitable
    titration: suitable

    λmax

    503 nm

    suitability

    passes test for complexometric indicator

    Featured Industry

    Diagnostic Assay Manufacturing

    storage temp.

    room temp

    SMILES string

    [Na+].Oc1cc(c2cc(ccc2c1\N=N\c3ccc4ccccc4c3O)[N+]([O-])=O)S([O-])(=O)=O

    InChI

    1S/C20H13N3O7S.Na/c24-17-10-18(31(28,29)30)15-9-12(23(26)27)6-7-14(15)19(17)22-21-16-8-5-11-3-1-2-4-13(11)20(16)25;/h1-10,24-25H,(H,28,29,30);/q;+1/p-1/b22-21+;

    InChI key

    AMMWFYKTZVIRFN-QUABFQRHSA-M

    General description

    Eriochrome® Black T is used as an indicator for complexometric titrations. It functions as an acid-base indicator. Eriochrome® Black T forms complex with Ca2+ and Mg2+, but it binds more strongly to Mg2+ ions.
    Eriochrome® Black T is a hydroxyl-arylazo dye and is generally supplied as a monosodium salt. This dye exists as a dark violet powder with green metallic sheen. Eriochrome Black T is soluble in water and alcohol, but insoluble in common organic solvents. It is mainly used as an indicator in ethylenediaminetetraacetic acid (EDTA) method to determine hardness of water.

    Application

    Eriochrome Black T has been used to determine the concentration of Ca2+ using complexometric titration method.

    Packaging

    100, 500 g in glass bottle
    1 kg in glass bottle

    Legal Information

    Eriochrome is a registered trademark of Huntsman Petrochemical, LLC

    SAFETY INFORMATION

    Hazard Statements

    H411

    Precautionary Statements

    P273 - P391 - P501

    Personal Protective Equipment

    dust mask type N95 (US),Eyeshields,Gloves

    RIDADR

    NONH for all modes of transport

    WGK Germany

    WGK 2

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable