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Titration and Karl Fischer Titration

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  1. Thymolphthalein indicator
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    Thymolphthalein indicator
    CAS: 125-20-2 EC Number: 204-729-7 PubChem CID: 31316 Formula: C28H30O4 Molecular Weight: 430.54
    90% (v/v) ethanol containing 0.05% (w/v)
    In Stock Item #: T196524
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    Synonyms
    1(3H)-Isobenzofuranone,3-bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]- | 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylp...
  2. Crystal violet
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    Crystal violet
    CAS: 548-62-9 EC Number: 208-953-6 Formula: C25H30N3Cl Molecular Weight: 407.98
    0.1% in water
    In Stock Item #: C196471
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    IUPAC Name
    [4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium;chloride
    SMILES
    CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.[Cl-]
    InChIKey
    ZXJXZNDDNMQXFV-UHFFFAOYSA-M
    InChI
    1S/C25H30N3.ClH/c1-26(2)22-13-7-19(8-14-22)25(20-9-15-23(16-10-20)27(3)4)21-11-17-24(18-12-21)28(5)6;/h7-18H,1-6H3;1H/q+1;/p-1
    Synonyms
    Caswell No. 264A | Gentioletten | Blaues pyoktanin | C.I. Basic violet 3 | Methyl Violet 6B (biological stain) | Badi...
  3. Ferroin indicator solution
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    Ferroin indicator solution
    CAS: 14634-91-4 PubChem CID: 84567 Formula: FeC36H24N6SO4 Molecular Weight: 692.52
    Reagent Grade ? General reagent-grade purity suitable for most laboratory work. Use as a dependable default when no specific higher grade is required.
    In Stock Item #: F105943
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    IUPAC Name
    iron(2+);1,10-phenanthroline;sulfate
    SMILES
    C1=CC2=C(C3=C(C=CC=N3)C=C2)N=C1.C1=CC2=C(C3=C(C=CC=N3)C=C2)N=C1.C1=CC2=C(C3=C(C=CC=N3)C=C2)N=C1.[O-]S(=O)(=O)[O-].[Fe+2]
    InChIKey
    CIWXFRVOSDNDJZ-UHFFFAOYSA-L
    InChI
    1S/3C12H8N2.Fe.H2O4S/c3*1-3-9-5-6-10-4-2-8-14-12(10)11(9)13-7-1;;1-5(2,3)4/h3*1-8H;;(H2,1,2,3,4)/q;;;+2;/p-2
    Synonyms
    iron(2+);1,10-phenanthroline;sulfate | Iron(2++), tris(1,10-phenanthroline-N1,N19)-, (OC-6-11)-, sulfate (1:1) | Iron...
  4. Bromocresol purple
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    Bromocresol purple
    CAS: 115-40-2 Formula: C21H16Br2O5S Molecular Weight: 540.22
    ≥98%
    In Stock Item #: B101196
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    IUPAC Name
    2-bromo-4-[3-(3-bromo-4-hydroxy-5-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-6-methylphenol
    SMILES
    CC1=CC(=CC(=C1O)Br)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4)C)O)Br
    InChIKey
    ABIUHPWEYMSGSR-UHFFFAOYSA-N
    InChI
    1S/C21H16Br2O5S/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21/h3-10,24-25H,1-2H3
    Synonyms
    BCP | 4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-methylphenol) | MFCD00011681 | 4,4'-(3H-2,1-BENZO...
  5. Safranine T
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    Safranine T
    CAS: 477-73-6 EC Number: 207-518-8 Formula: C20H19ClN4 Molecular Weight: 350.85
    Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually.
    In Stock Item #: S104171
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    IUPAC Name
    3,7-dimethyl-10-phenylphenazin-10-ium-2,8-diamine;chloride
    SMILES
    CC1=CC2=C(C=C1N)[N+](=C3C=C(C(=CC3=N2)C)N)C4=CC=CC=C4.[Cl-]
    InChIKey
    OARRHUQTFTUEOS-UHFFFAOYSA-N
    InChI
    1S/C20H18N4.ClH/c1-12-8-17-19(10-15(12)21)24(14-6-4-3-5-7-14)20-11-16(22)13(2)9-18(20)23-17;/h3-11H,1-2H3,(H3,21,22);1H
    Synonyms
    A872074 | BASIC RED 2 [INCI] | Mitsui safranine | Phenazinium, 3,7-diamino-2,8-dimethyl-5-phenyl-, chloride (1:1) | S...
  6. Bromoxylenol Blue
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    Bromoxylenol Blue
    CAS: 40070-59-5 PubChem CID: 417069 Formula: C23H20Br2O5S Molecular Weight: 568.28
    Out of Stock Item #: B141320
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    Synonyms
    3',3''-Dibromo-p-xylenolsulfonephthalein | 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[3-bromo-2,5-dimethylphenol] S,S-di...
  7. Methyl orange - ≥96%, CAS No. 547-58-0 by Aladdin Scientific
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    Methyl orange
    CAS: 547-58-0 EC Number: 208-925-3 Formula: C14H14N3NaO3S Molecular Weight: 327.33
    Solid ≥96%
    In Stock Item #: M101231
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    Technical Identifiers
    IUPAC Name
    sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate
    SMILES
    CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+]
    InChIKey
    STZCRXQWRGQSJD-UHFFFAOYSA-M
    InChI
    1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);/q;+1/p-1
    Synonyms
    (R)-1-cyclohexyl-1-phenyl-3-(pyrrolidin-1-yl)propan-1-ol hydrochloride | Methyloranz [Czech] | Oranz kysela 52 [Czech...
  8. Calmagite
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    Calmagite
    CAS: 3147-14-6 Formula: C17H14N2O5S Molecular Weight: 358.37
    Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually.
    In Stock Item #: C106349
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    IUPAC Name
    3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalene-1-sulfonic acid
    SMILES
    CC1=CC(=C(C=C1)O)N=NC2=C(C=C(C3=CC=CC=C32)S(=O)(=O)O)O
    InChIKey
    VBRNLOQCBCPPHL-UHFFFAOYSA-N
    InChI
    1S/C17H14N2O5S/c1-10-6-7-14(20)13(8-10)18-19-17-12-5-3-2-4-11(12)16(9-15(17)21)25(22,23)24/h2-9,20-21H,1H3,(H,22,23,24)
    Synonyms
    3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalene-1-sulfonic acid | CALMAGITE [MI] | 1-Naphthalenesulfonic ...
  9. Orange Ⅳ - indicator CAS No(554-73-4) by Aladdin Scientific
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    Orange Ⅳ
    CAS: 554-73-4 EC Number: 209-071-4 Formula: C18H14N3NaO3S Molecular Weight: 375.38
    Solid Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually.
    In Stock Item #: O112780
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    Technical Identifiers
    IUPAC Name
    sodium;4-[(4-anilinophenyl)diazenyl]benzenesulfonate
    SMILES
    C1=CC=C(C=C1)NC2=CC=C(C=C2)N=NC3=CC=C(C=C3)S(=O)(=O)[O-].[Na+]
    InChIKey
    MLVYOYVMOZFHIU-UHFFFAOYSA-M
    InChI
    1S/C18H15N3O3S.Na/c22-25(23,24)18-12-10-17(11-13-18)21-20-16-8-6-15(7-9-16)19-14-4-2-1-3-5-14;/h1-13,19H,(H,22,23,24);/q;+1/p-1
    Synonyms
    MFCD00038130 | Sodium 4-[(4-anilinophenyl)diazenyl]benzene-1-sulfonate | VR8Q3R288W | FT-0682673 | NSC-10456 | Orange...
  10. Bromochlorophenol Blue
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    Bromochlorophenol Blue
    CAS: 2553-71-1 Formula: C19H10Br2Cl2O5S Molecular Weight: 581.05
    Dye content 95 %
    In Stock Item #: B136139
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    Technical Identifiers
    IUPAC Name
    2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-6-chlorophenol
    SMILES
    C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Cl)C4=CC(=C(C(=C4)Br)O)Cl
    InChIKey
    MDGFKZKMIQQRPU-UHFFFAOYSA-N
    InChI
    1S/C19H10Br2Cl2O5S/c20-12-5-9(7-14(22)17(12)24)19(10-6-13(21)18(25)15(23)8-10)11-3-1-2-4-16(11)29(26,27)28-19/h1-8,24-25H
    Synonyms
    AKOS015915563 | NSC 7816 | Bromochlorophenol blue | Phenol,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S...
  11. Metanil yellow
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    Metanil yellow
    CAS: 587-98-4 EC Number: 209-608-2 Formula: C18H14N3NaO3S Molecular Weight: 375.38
    Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually.
    In Stock Item #: M112777
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    Technical Identifiers
    IUPAC Name
    sodium;3-[(4-anilinophenyl)diazenyl]benzenesulfonate
    SMILES
    C1=CC=C(C=C1)NC2=CC=C(C=C2)N=NC3=CC(=CC=C3)S(=O)(=O)[O-].[Na+]
    InChIKey
    NYGZLYXAPMMJTE-UHFFFAOYSA-M
    InChI
    1S/C18H15N3O3S.Na/c22-25(23,24)18-8-4-7-17(13-18)21-20-16-11-9-15(10-12-16)19-14-5-2-1-3-6-14;/h1-13,19H,(H,22,23,24);/q;+1/p-1
    Synonyms
    METANIL YELLOW [MI] | Metanil Yellow F | Metanil Yellow KRSU | Basacid Yellow 232 | Benzenesulfonic acid, m-((p-anili...
  12. Sulfanilic acid azochromotrop - reagent grade, used for , CAS No. 23647-14-5, by Aladdin Scientific
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    Sulfanilic acid azochromotrop
    CAS: 23647-14-5 EC Number: 245-803-9 PubChem CID: 90221 Formula: C16H9N2Na3O11S3 Molecular Weight: 570.41
    AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results.
    In Stock Item #: S121928
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    Technical Identifiers
    IUPAC Name
    trisodium;4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate
    SMILES
    C1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
    InChIKey
    AEHGQXKBQBMQEK-UHFFFAOYSA-K
    InChI
    1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,19-20H,(H,21,22,23)(H,24,2show more
    Synonyms
    SPADNS ACS grade | 8C9EXU0M2M | 5-(3-Chlorophenyl)-N-(4-(morpholinomethyl)-phenyl)furan-2-carboxamide | 2-(4-Sulfophe...
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