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Stains & Dyes

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  • Eriochrome Blue Black R

    Purity:
    ≥ 70% (Dye content)
    Synonym:
    Mordant Black 17
    Catalog Number:
    22808
    Purity Limit:
    ≥ 70% (Dye content)
    CAS Number:
    2538-85-4
    MDL NO:
    MFCD00004069
    Molecular Formula:
    C20H13N2O5SNa
    Molecular Weight:
    416.39
  • Sudan III

    Grade:
    Certifiable Grade
    Purity:
    ≥ 81% (dye content)
    Synonym:
    Solvent Red 23
    Catalog Number:
    22798
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 81% (dye content)
    CAS Number:
    85-86-9
    MDL NO:
    MFCD00003905
    Molecular Formula:
    C22H16N4O
    Molecular Weight:
    352.4
  • Para Red

    Purity:
    ≥ 98% (Dye Content)
    Synonym:
    Pigment Red 1
    Catalog Number:
    22799
    Purity Limit:
    ≥ 98% (Dye Content)
    CAS Number:
    6410-10-2
    MDL NO:
    MFCD00003908
    Molecular Formula:
    C16H11N3O3
    Molecular Weight:
    293.28
  • Chicago Sky Blue 6B

    Purity:
    Dye content: ~ 50%
    Synonym:
    Direct Blue
    Catalog Number:
    22806
    Purity Limit:
    Dye content: ~ 50%
    CAS Number:
    2610-05-1
    MDL NO:
    MFCD00004020
    Molecular Formula:
    C34H24N6O16S4·4Na
    Molecular Weight:
    992.81
  • Erichrome Blue Black B

    Synonym:
    Mordant Black 3
    Catalog Number:
    22801
    CAS Number:
    3564-14-5
    MDL NO:
    MFCD00003934
    Molecular Formula:
    C20H13N2O5SNa
    Molecular Weight:
    416.39
  • Chromotrope 2B

    Synonym:
    Acid Red 176
    Catalog Number:
    22802
    CAS Number:
    548-80-1
    MDL NO:
    MFCD00003951
    Molecular Formula:
    C16H9N3O10S2·2Na
    Molecular Weight:
    513.37
  • Sudan Red 7B

    Synonym:
    Solvent Red 19
    Catalog Number:
    22797
    CAS Number:
    6368-72-5
    MDL NO:
    MFCD00003904
    Molecular Formula:
    C24H21N5
    Molecular Weight:
    379.47
  • Crocein Orange G

    Purity:
    ≥ 89% (Dye content)
    Synonym:
    Acid Orange 12
    Catalog Number:
    22800
    Purity Limit:
    ≥ 89% (Dye content)
    CAS Number:
    1934-20-9
    MDL NO:
    MFCD00003912
    Molecular Formula:
    C16H11N2O4SNa
    Molecular Weight:
    350.33
  • Sudan II

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    Solvent Orange 7
    Catalog Number:
    22796
    Purity Limit:
    ≥ 90% (Dye content)
    CAS Number:
    3118-97-6
    MDL NO:
    MFCD00003896
    Molecular Formula:
    C18H16N2O
    Molecular Weight:
    276.34
  • Naphthol Green B

    Grade:
    ACS reagent
    Synonym:
    Acid Green 1
    Catalog Number:
    22792
    Grade:
    ACS reagent
    CAS Number:
    19381-50-1
    MDL NO:
    MFCD00003886
    Molecular Formula:
    C30H15FeN3O15S3·3Na
    Molecular Weight:
    878.47
  • Sudan IV

    Grade:
    Certifiable Grade
    Purity:
    ≥ 88% (dye content)
    Synonym:
    Solvent Red 24
    Catalog Number:
    22795
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 88% (dye content)
    CAS Number:
    85-83-6
    MDL NO:
    MFCD00003893
    Molecular Formula:
    C24H20N4O
    Molecular Weight:
    380.45
  • p-Rosolic acid

    Synonym:
    Aurin
    Catalog Number:
    22777
    CAS Number:
    603-45-2
    MDL NO:
    MFCD00001624
    Molecular Formula:
    C19H14O3
    Molecular Weight:
    290.32
  • 4-Phenylazophenol

    Purity:
    ≥ 98% (Assay)
    Synonym:
    Solvent Yellow 7
    Catalog Number:
    22781
    Purity Limit:
    ≥ 98% (Assay)
    CAS Number:
    1689-82-3
    MDL NO:
    MFCD00002330
    Molecular Formula:
    C12H10N2O
    Molecular Weight:
    198.22
  • Methyl Red free acid

    Purity:
    ≥ 96% (Dye content)
    Synonym:
    4-Dimethylaminoazobenzene-2'-carboxylic acid
    Catalog Number:
    22782
    Purity Limit:
    ≥ 96% (Dye content)
    CAS Number:
    493-52-7
    MDL NO:
    MFCD00002425
    Molecular Formula:
    C15H15N3O2
    Molecular Weight:
    269.3
  • Ethyl Red Indicator

    Synonym:
    4-(Diethylamino)azobenzene-2'-carboxylic acid
    Catalog Number:
    22783
    CAS Number:
    76058-33-8
    MDL NO:
    MFCD00002427
    Molecular Formula:
    C17H19N3O2
    Molecular Weight:
    297.36
  • Acid Green 25

    Purity:
    ≥ 96% (Dye content)
    Synonym:
    Alizarian Cyamine Green B
    Catalog Number:
    22769
    Purity Limit:
    ≥ 96% (Dye content)
    CAS Number:
    4403-90-1
    MDL NO:
    MFCD00001193
    Molecular Formula:
    C28H20N2Na2O8S2
    Molecular Weight:
    622.58
  • Chrome Azurol S

    Purity:
    Single spot (TLC)
    Synonym:
    Mordant Blue 29
    Catalog Number:
    22775
    Purity Limit:
    Single spot (TLC)
    CAS Number:
    1667-99-8
    MDL NO:
    MFCD00001615
    Molecular Formula:
    C23H13Cl2O9S·3Na
    Molecular Weight:
    605.29
  • 1,2,4-Trihydroxy-9,10-anthracenedione

    Purity:
    ≥ 95% (HPLC)
    Synonym:
    Purpurin
    Catalog Number:
    22772
    Purity Limit:
    ≥ 95% (HPLC)
    CAS Number:
    81-54-9
    MDL NO:
    MFCD00001203
    Molecular Formula:
    C14H8O5
    Molecular Weight:
    256.21
  • Alizarin

    Purity:
    ≥ 98% (Dye content)
    Synonym:
    Mordant Red 11
    Catalog Number:
    22770
    Purity Limit:
    ≥ 98% (Dye content)
    CAS Number:
    72-48-0
    MDL NO:
    MFCD00001201
    Molecular Formula:
    C14H8O4
    Molecular Weight:
    240.21
  • Rose Bengal

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    4,5,6,7-Tetrachloro-2',4',5',7'-tetraiodofluorescein disodiumsalt
    Catalog Number:
    21920
    Purity Limit:
    ≥ 90% (Dye content)
    CAS Number:
    632-69-9
    MDL NO:
    MFCD00151169
    Molecular Formula:
    C20H2Cl4I4Na2O5
    Molecular Weight:
    1017.62
  • Catalog Number:
    21740
    CAS Number:
    4430-24-4
    MDL NO:
    MFCD00010405
    Molecular Formula:
    C19H10I4O5S
    Molecular Weight:
    857.95
  • Xanthopterin monohydrate

    Synonym:
    2-Amino-4,6-dihydroxypteridene monohydrate
    Catalog Number:
    21551
    CAS Number:
    5979-01-1
    MDL NO:
    MFCD00151242
    Molecular Formula:
    C6H5N5O2·H2O
    Molecular Weight:
    197.15
  • 4-Nitroaniline

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    p-Aminonitrobenzene
    Hazmat
    Catalog Number:
    14327
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    100-01-6
    MDL NO:
    MFCD00007858
    Molecular Formula:
    C6H6N2O2
    Molecular Weight:
    138.12
  • o-Dianisidine

    Hazmat
    Purity:
    ≥ 99%
    Synonym:
    3,3'-Dimethoxybenzidine
    Hazmat
    Catalog Number:
    01936
    Purity Limit:
    ≥ 99%
    CAS Number:
    119-90-4
    MDL NO:
    MFCD00008372
    Molecular Formula:
    C14H16N2O2
    Molecular Weight:
    244.3
  • Toluidine Blue O

    Grade:
    Certifiable Grade
    Purity:
    ≥ 80% (Dye content)
    Synonym:
    Basic blue 17
    Catalog Number:
    01804
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 80% (Dye content)
    CAS Number:
    92-31-9
    MDL NO:
    MFCD00011934
    Molecular Formula:
    C15H16N3SCl
    Molecular Weight:
    305.83
  • 4-Dimethylaminoazobenzene

    Hazmat
    Grade:
    Indicator
    Purity:
    ≥ 99% (Assay)
    Synonym:
    N,N-Dimethyl-4-phenylazoaniline
    Hazmat
    Catalog Number:
    01726
    Grade:
    Indicator
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    60-11-7
    MDL NO:
    MFCD00008308
    Molecular Formula:
    C14H15N3
    Molecular Weight:
    225.3
  • Resazurin sodium salt

    Purity:
    ≥ 90% (HPLC)
    Synonym:
    7-Hydroxy-3H-phenoxazin-3-one-10-oxide sodium salt
    Catalog Number:
    01725
    Purity Limit:
    ≥ 90% (HPLC)
    CAS Number:
    62758-13-8
    MDL NO:
    MFCD00005036
    Molecular Formula:
    C12H6NNaO4
    Molecular Weight:
    251.18
  • 2,3,5-Triphenyl-2H-tetrazolium chloride

    Hazmat
    Purity:
    ≥ 99% (Assay)
    Synonym:
    Tetrazolium red
    Hazmat
    Catalog Number:
    01646
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    298-96-4
    MDL NO:
    MFCD00011963
    Molecular Formula:
    C19H15N4Cl
    Molecular Weight:
    334.81
  • Trypan blue

    Hazmat
    Grade:
    Certifiable Grade
    Purity:
    ≥ 70% (dye content)
    Synonym:
    Direct blue 14
    Hazmat
    Catalog Number:
    01636
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 70% (dye content)
    CAS Number:
    72-57-1
    MDL NO:
    MFCD00003969
    Molecular Formula:
    C34H24N6O14S4Na4
    Molecular Weight:
    960.82
  • Rhodamine B

    Synonym:
    Rhodamine B chloride
    Catalog Number:
    01626
    CAS Number:
    81-88-9
    MDL NO:
    MFCD00011931
    Molecular Formula:
    C28H31ClN2O3
    Molecular Weight:
    479.02
  • Light green SF yellowish

    Purity:
    ≥ 80% (Dye content)
    Synonym:
    Acid green 5
    Catalog Number:
    01610
    Purity Limit:
    ≥ 80% (Dye content)
    CAS Number:
    5141-20-8
    MDL NO:
    MFCD00012121
    Molecular Formula:
    C37H34N2O9S3Na2
    Molecular Weight:
    792.88
  • Acid fuchsin sodium salt, Certified

    Grade:
    Certifiable Grade
    Purity:
    ≥ 90%
    Synonym:
    Acid violet 19
    Catalog Number:
    01606
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 90%
    CAS Number:
    3244-88-0
    MDL NO:
    MFCD00013286
    Molecular Formula:
    C20H17N3O9S3Na2
    Molecular Weight:
    585.5
  • Evans blue

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    Direct blue 53
    Catalog Number:
    01600
    Purity Limit:
    ≥ 85% (Dye content)
    CAS Number:
    314-13-6
    MDL NO:
    MFCD00004021
    Molecular Formula:
    C34H24N6O14S4Na4
    Molecular Weight:
    960.82
  • Brilliant Green

    Grade:
    Certifiable Grade
    Purity:
    ≥ 97% (Dye content)
    Synonym:
    Malachite green G
    Catalog Number:
    01586
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 97% (Dye content)
    CAS Number:
    633-03-4
    MDL NO:
    MFCD00011880
    Molecular Formula:
    C27H34N2O4S
    Molecular Weight:
    482.65
  • Nigrosine (Water soluble)

    Purity:
    ≥ 99.5% (Assay)
    Synonym:
    Acid Black 2
    Catalog Number:
    01426
    Purity Limit:
    ≥ 99.5% (Assay)
    CAS Number:
    8005-03-6
    MDL NO:
    MFCD00044681
  • Brilliant blue G-250

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    Coomassie brilliant blue G
    Catalog Number:
    01306
    Purity Limit:
    ≥ 85% (Dye content)
    CAS Number:
    6104-58-1
    MDL NO:
    MFCD00078482
    Molecular Formula:
    C47H48N3O7S2Na
    Molecular Weight:
    854.0
  • Naphthol blue black

    Purity:
    ≥ 84% (dye content)
    Synonym:
    CI 20470
    Catalog Number:
    01272
    Purity Limit:
    ≥ 84% (dye content)
    CAS Number:
    1064-48-8
    MDL NO:
    MFCD00004017
    Molecular Formula:
    C22H14N6O9S2Na2
    Molecular Weight:
    616.5
  • Sudan Black B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 95% (Dye content)
    Synonym:
    Fat black HB
    Catalog Number:
    01307
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 95% (Dye content)
    CAS Number:
    4197-25-5
    MDL NO:
    MFCD00006919
    Molecular Formula:
    C29H24N6
    Molecular Weight:
    456.55
  • Brilliant blue R-250

    Purity:
    ≥ 91% (Dye content)
    Synonym:
    Brilliant blue R
    Catalog Number:
    01275
    Purity Limit:
    ≥ 91% (Dye content)
    CAS Number:
    6104-59-2
    MDL NO:
    MFCD00041762
    Molecular Formula:
    C45H44N3O7S2Na
    Molecular Weight:
    826.0
  • Xylene cyanole FF

    Purity:
    ≥ 75% (Dye content)
    Synonym:
    Acid blue 147
    Catalog Number:
    01310
    Purity Limit:
    ≥ 75% (Dye content)
    CAS Number:
    2650-17-1
    MDL NO:
    MFCD00040657
    Molecular Formula:
    C25H27N2O6S2Na
    Molecular Weight:
    538.62
  • Methyl orange

    Hazmat
    Grade:
    ACS reagent
    Synonym:
    4-[4-(Dimethylamino)-phenylazo]benzenesulfonic acid sodium salt
    Hazmat
    Catalog Number:
    01239
    Grade:
    ACS reagent
    CAS Number:
    547-58-0
    MDL NO:
    MFCD00007502
    Molecular Formula:
    C14H14N3O3SNa
    Molecular Weight:
    327.3
  • Fluorescein

    Purity:
    99 - 100% (Dye content)
    Synonym:
    CI 45350
    Catalog Number:
    00962
    Purity Limit:
    99 - 100% (Dye content)
    CAS Number:
    2321-07-5
    MDL NO:
    MFCD00005050
    Molecular Formula:
    C20H12O5
    Molecular Weight:
    332.31
  • Phloxine B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 92.5% (Dye content)
    Synonym:
    Cyanosine
    Catalog Number:
    00803
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 92.5% (Dye content)
    CAS Number:
    18472-87-2
    MDL NO:
    MFCD00070627
    Molecular Formula:
    C20H2Br4Cl4O5Na2
    Molecular Weight:
    829.6
  • Erichrome black T

    Grade:
    ACS reagent (Indicator grade)
    Synonym:
    Mordant black 11
    Catalog Number:
    00665
    Grade:
    ACS reagent (Indicator grade)
    CAS Number:
    1787-61-7
    MDL NO:
    MFCD00003935
    Molecular Formula:
    C20H12N3O7SNa
    Molecular Weight:
    461.4
  • Chromotrope 2R

    Purity:
    ≥ 77% (Dye content: Spectrophotometry)
    Synonym:
    Acid red 29
    Catalog Number:
    00589
    Purity Limit:
    ≥ 77% (Dye content: Spectrophotometry)
    CAS Number:
    4197-07-3
    MDL NO:
    MFCD00003955
    Molecular Formula:
    C16H10N2Na2O8S2
    Molecular Weight:
    468.37
  • Orcein (synthetic)

    Synonym:
    Natural red 28
    Catalog Number:
    00592
    CAS Number:
    1400-62-0
    MDL NO:
    MFCD00062310
  • Fast green FCF

    Grade:
    Certifiable Grade
    Purity:
    ≥ 96% (HPLC)
    Synonym:
    Food green 3
    Catalog Number:
    00475
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 96% (HPLC)
    CAS Number:
    2353-45-9
    MDL NO:
    MFCD00013053
    Molecular Formula:
    C37H34N2O10S3Na2
    Molecular Weight:
    808.86
  • Acridine orange biological stain

    Purity:
    ≥ 90% (Assay)
    Synonym:
    3,6-bis(Dimethylamino)acridine hemizinc chloride
    Catalog Number:
    00481
    Purity Limit:
    ≥ 90% (Assay)
    CAS Number:
    10127-02-3
    MDL NO:
    MFCD00081043
    Molecular Formula:
    C17H20ClN3·½ZnCl2
    Molecular Weight:
    369.94
  • Auramine O

    Hazmat
    Grade:
    Certifiable Grade
    Purity:
    ≥ 80% (Dye Content)
    Synonym:
    Basic yellow 2
    Hazmat
    Catalog Number:
    00478
    Grade:
    Certifiable Grade
    Purity Limit:
    ≥ 80% (Dye Content)
    CAS Number:
    2465-27-2
    MDL NO:
    MFCD00012484
    Molecular Formula:
    C17H21N3·HCl
    Molecular Weight:
    321.9
  • Catalog Number:
    00249
    Purity Limit:
    ≥ 85% (Dye content)
    CAS Number:
    6226-79-5
    MDL NO:
    MFCD00003892
    Molecular Formula:
    C22H12N4O13S4Na4
    Molecular Weight:
    760.6