💛 99% Happy customers

📦 Same-day shipping on in-stock items

🌟 The Next Big Thing in Science

Stains & Dyes

3
Sub Categories
Acid Dyes 65
Azoic Dyes 10
Basic Dyes 39
Direct Dyes 22
Disperse Dyes 1
Mordant Dyes 14
Oil Dyes 19
Other Stains & Dyes 99
Pigments 23
Sulfur Dyes 3
Vat Dyes 5
Filters

  • Sodium 2-((4-(hydroxybis(4-(phenylamino)phenyl)methyl)phenyl)amino)benzenesulfonate

    Synonym:
    Acid blue 119
    Catalog Number:
    37381
    CAS Number:
    1324-80-7
    MDL NO:
    MFCD00083221
    Molecular Formula:
    C37H30N3O4SNa
    Molecular Weight:
    635.71
    Specification Sheet SDS

  • Curcumin, ≥ 95% (Curcuminoid content), ≥ 70% (Curcumin), 16%-20% (Methoxycurcumin), 2%-6% (Bisdemethoxycurcumin) from Turmeric rhizome

    Purity:
    ≥ 95% (Total Curcuminoid content) ≥ 70% (Curcumin I) 16 – 20% (Methoxycurcumin II) 2 – 6% (Bisdemethoxycurcumin III)
    Synonym:
    (E,E)-1,7-bis(4-Hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione
    Catalog Number:
    33345
    CAS Number:
    458-37-7
    Purity Limit:
    ≥ 95% (Total Curcuminoid content) ≥ 70% (Curcumin I) 16 – 20% (Methoxycurcumin II) 2 – 6% (Bisdemethoxycurcumin III)
    MDL NO:
    MFCD00008365
    Molecular Formula:
    C21H20O6
    Molecular Weight:
    368.38
    Specification Sheet SDS

  • Chromotropic acid disodium salt dihydrate

    Purity:
    ≥ 98%
    Synonym:
    1,8-Dihydroxy-3,6-naphthalenedisulfonic acid disodium salt dihydrate
    Catalog Number:
    33367
    CAS Number:
    5808-22-0
    Purity Limit:
    ≥ 98%
    MDL NO:
    MFCD00150612
    Molecular Formula:
    C10H6O8S2·2Na·2H2O
    Molecular Weight:
    400.29
    Specification Sheet SDS

  • Naphthol Green B

    Synonym:
    Acid Green 1
    Catalog Number:
    30176
    CAS Number:
    19381-50-1
    MDL NO:
    MFCD00003886
    Molecular Formula:
    C30H15FeN3O15S3·3Na
    Molecular Weight:
    878.47
    Specification Sheet SDS

  • Crystal violet

    Hazmat
    Grade:
    ACS reagent
    Purity:
    ≥ 90% (Assay)
    Synonym:
    Hexamethylpararosaniline chloride
    Hazmat
    Catalog Number:
    30052
    Grade:
    ACS reagent
    CAS Number:
    548-62-9
    Purity Limit:
    ≥ 90% (Assay)
    MDL NO:
    MFCD00011750
    Molecular Formula:
    C25H30ClN3
    Molecular Weight:
    407.99
    Specification Sheet SDS

  • Xylene cyanole FF

    Grade:
    For Molecular Biology, Bior
    Purity:
    Dye Content: ≥ 75%
    Synonym:
    Acid blue 147
    Catalog Number:
    29940
    Grade:
    For Molecular Biology, Bior
    CAS Number:
    2650-17-1
    Purity Limit:
    Dye Content: ≥ 75%
    MDL NO:
    MFCD00040657
    Molecular Formula:
    C25H27N2O6S2Na
    Molecular Weight:
    538.62
    SDS

  • Chromotrope 2R

    Purity:
    ≥ 75% (Dye content)
    Synonym:
    Acid red 29
    Catalog Number:
    29858
    CAS Number:
    4197-07-3
    Purity Limit:
    ≥ 75% (Dye content)
    MDL NO:
    MFCD00003955
    Molecular Formula:
    C16H10N2Na2O8S2
    Molecular Weight:
    468.37
    Specification Sheet SDS

  • Pararosaniline base 

    Purity:
    Dye content: ≥ 95%
    Synonym:
    Parafuchsin
    Catalog Number:
    22962
    CAS Number:
    467-62-9
    Purity Limit:
    Dye content: ≥ 95%
    MDL NO:
    MFCD00036222
    Molecular Formula:
    C19H19N3O
    Molecular Weight:
    305.38
    Specification Sheet SDS

  • Methyl Violet 2B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 75% (dye content)
    Synonym:
    Basic Violet 1 
    Catalog Number:
    22950
    Grade:
    Certifiable Grade
    CAS Number:
    8004-87-3
    Purity Limit:
    ≥ 75% (dye content)
    MDL NO:
    MFCD00012568
    Molecular Formula:
    C24H26ClN3
    Molecular Weight:
    393.96
    Specification Sheet SDS

  • Carminic acid

    Purity:
    ≥ 50% (Dye content)
    Synonym:
    Natural Red 4 
    Catalog Number:
    22948
    CAS Number:
    1390-65-4
    Purity Limit:
    ≥ 50% (Dye content)
    MDL NO:
    MFCD00167028
    Molecular Formula:
    C22H20O13
    Molecular Weight:
    492.39
    Specification Sheet SDS

  • Chromotropic acid disodium salt dihydrate

    Grade:
    ACS reagent
    Synonym:
    1,8-Dihydroxy-3,6-naphthalenedisulfonic acid disodium salt dihydrate
    Catalog Number:
    22943
    Grade:
    ACS reagent
    CAS Number:
    5808-22-0
    MDL NO:
    MFCD00150612
    Molecular Formula:
    C10H6O8S2·2Na·2H2O
    Molecular Weight:
    400.29
    Specification Sheet SDS

  • Erythrosin B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 87% (Dye content)
    Synonym:
    Acid Red 51 
    Catalog Number:
    22936
    Grade:
    Certifiable Grade
    CAS Number:
    16423-68-0
    Purity Limit:
    ≥ 87% (Dye content)
    MDL NO:
    MFCD00144257
    Molecular Formula:
    C20H6I4O5·2Na
    Molecular Weight:
    879.84
    Specification Sheet SDS

  • Direct Red 80

    Purity:
    ≥ 21% (Dye content)
    Synonym:
    Sirius Red
    Catalog Number:
    22913
    CAS Number:
    2610-10-8
    Purity Limit:
    ≥ 21% (Dye content)
    MDL NO:
    MFCD00054389
    Molecular Formula:
    C45H26N10Na6O21S6
    Molecular Weight:
    1373.09
    Specification Sheet SDS

  • Tropaeolin OO Indicator

    Synonym:
    4-[(4-Anilinophenyl)azo]benzenesulfonic acid sodium salt
    Catalog Number:
    22905
    CAS Number:
    554-73-4
    MDL NO:
    MFCD00038130
    Molecular Formula:
    C18H14N3O3SNa
    Molecular Weight:
    375.38
    Specification Sheet SDS

  • Aurintricarboxylic acid [tri]ammonium salt

    Grade:
    ACS reagent
    Synonym:
    Aluminon
    Catalog Number:
    22907
    Grade:
    ACS reagent
    CAS Number:
    569-58-4
    MDL NO:
    MFCD00040925
    Molecular Formula:
    C22H14O9·3H3N
    Molecular Weight:
    473.44
    Specification Sheet SDS

  • Bromophenol Red Free acid 

    Purity:
    ≥ 95% (Dye content)
    Synonym:
    5',5''-Dibromophenolsulfonephthalein
    Catalog Number:
    22904
    CAS Number:
    2800-80-8
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00023014
    Molecular Formula:
    C19H12Br2O5S
    Molecular Weight:
    512.17
    Specification Sheet SDS

  • Rhodamine 6G

    Purity:
    ≥ 97% (Dye content)
    Synonym:
    Basic Red 1 
    Catalog Number:
    22885
    CAS Number:
    989-38-8
    Purity Limit:
    ≥ 97% (Dye content)
    MDL NO:
    MFCD00012665
    Molecular Formula:
    C28H30N2O3·HCl
    Molecular Weight:
    479.02
    Specification Sheet SDS

  • Benzopurpurin 4B 

    Synonym:
    Direct Red 2 
    Catalog Number:
    22877
    CAS Number:
    992-59-6
    MDL NO:
    MFCD00012410
    Molecular Formula:
    C34H26N6O6S2·2Na
    Molecular Weight:
    724.73
    Specification Sheet SDS

  • Nile Blue chloride 

    Purity:
    Dye content: ≥ 90%
    Synonym:
    5-Amino-9-diethyliminobenzo[α]phenoxazonium chloride
    Catalog Number:
    22869
    CAS Number:
    2381-85-3
    Purity Limit:
    Dye content: ≥ 90%
    MDL NO:
    MFCD00011936
    Molecular Formula:
    C20H20N3OCl
    Molecular Weight:
    353.85
    Specification Sheet SDS

  • Lissamine Green B 

    Purity:
    Dye content: ≥ 80%
    Synonym:
    Cyanol green B
    Catalog Number:
    22874
    CAS Number:
    3087-16-9
    Purity Limit:
    Dye content: ≥ 80%
    MDL NO:
    MFCD00012117
    Molecular Formula:
    C27H25N2O7S2Na
    Molecular Weight:
    576.62
    Specification Sheet SDS

  • Quinaldine Red 

    Purity:
    ≥ 95% (Dye content)
    Synonym:
    (2-[2-(4-Dimethylamino)phenyl]ethenyl)-1-ethylquinolinium iodide
    Catalog Number:
    22872
    CAS Number:
    117-92-0
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00011968
    Molecular Formula:
    C21H23N2I
    Molecular Weight:
    430.33
    Specification Sheet SDS

  • Victoria Blue B for Microscopy 

    Synonym:
    Basic Blue 26 
    Catalog Number:
    22863
    CAS Number:
    2580-56-5
    MDL NO:
    MFCD00011878
    Molecular Formula:
    C33H32N3Cl
    Molecular Weight:
    506.09
    Specification Sheet SDS

  • Metanil Yellow

    Purity:
    ≥ 78% (Dye content)
    Synonym:
    Acid Yellow 36
    Catalog Number:
    22833
    CAS Number:
    587-98-4
    Purity Limit:
    ≥ 78% (Dye content)
    MDL NO:
    MFCD00007486
    Molecular Formula:
    C18H14N3O3SNa
    Molecular Weight:
    375.38
    Specification Sheet SDS

  • Chrysophenine

    Purity:
    ≥ 65% (dye content)
    Synonym:
    Direct Yellow 12
    Catalog Number:
    22834
    CAS Number:
    2870-32-8
    Purity Limit:
    ≥ 65% (dye content)
    MDL NO:
    MFCD00007488
    Molecular Formula:
    C30H26N4O8S2·2Na
    Molecular Weight:
    680.67
    Specification Sheet SDS

  • Indigo Carmine

    Grade:
    Certifiable Grade
    Purity:
    ≥ 95% (Dye content)
    Synonym:
    Acid Blue 74
    Catalog Number:
    22821
    Grade:
    Certifiable Grade
    CAS Number:
    860-22-0
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00005723
    Molecular Formula:
    C16H8N2O8S2·2Na
    Molecular Weight:
    466.36
    Specification Sheet SDS

  • 4,5-Dibromofluorescein

    Purity:
    ≥ 95% (Dye content)
    Synonym:
    Acid Orange II
    Catalog Number:
    22818
    CAS Number:
    596-03-2
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00005042
    Molecular Formula:
    C20H10Br2O5
    Molecular Weight:
    490.1
    Specification Sheet SDS

  • Sudan III

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

  • Para Red

    Purity:
    ≥ 98% (Dye Content)
    Synonym:
    Pigment Red 1
    Catalog Number:
    22799
    CAS Number:
    6410-10-2
    Purity Limit:
    ≥ 98% (Dye Content)
    MDL NO:
    MFCD00003908
    Molecular Formula:
    C16H11N3O3
    Molecular Weight:
    293.28
    Specification Sheet SDS

  • 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
    Specification Sheet SDS

  • 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
    Specification Sheet SDS

  • 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
    Specification Sheet SDS

  • Sudan II

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

  • 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
    Specification Sheet SDS

  • p-Rosolic acid

    Synonym:
    Aurin
    Catalog Number:
    22777
    CAS Number:
    603-45-2
    MDL NO:
    MFCD00001624
    Molecular Formula:
    C19H14O3
    Molecular Weight:
    290.32
    Specification Sheet SDS

  • Methyl Red free acid

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

  • 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
    Specification Sheet SDS

  • Chrome Azurol S

    Purity:
    Single spot (TLC)
    Synonym:
    Mordant Blue 29
    Catalog Number:
    22775
    CAS Number:
    1667-99-8
    Purity Limit:
    Single spot (TLC)
    MDL NO:
    MFCD00001615
    Molecular Formula:
    C23H13Cl2O9S·3Na
    Molecular Weight:
    605.29
    Specification Sheet SDS

  • Alizarin

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

  • 3',3'',5',5''-Tetraiodophenolsulfonphthalein

    Catalog Number:
    21740
    CAS Number:
    4430-24-4
    MDL NO:
    MFCD00010405
    Molecular Formula:
    C19H10I4O5S
    Molecular Weight:
    857.95
    SDS

  • 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
    SDS

  • 4-Dimethylaminoazobenzene

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

  • Brilliant blue G-250

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

  • Brilliant blue R-250

    Purity:
    ≥ 88% (Dye content)
    Synonym:
    Brilliant blue R
    Catalog Number:
    01275
    CAS Number:
    6104-59-2
    Purity Limit:
    ≥ 88% (Dye content)
    MDL NO:
    MFCD00041762
    Molecular Formula:
    C45H44N3O7S2Na
    Molecular Weight:
    826.0
    Specification Sheet SDS

  • 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
    Specification Sheet SDS

  • Acridine orange biological stain

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

  • 3-Hydroxy-4[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    Ponceau S
    Catalog Number:
    00249
    CAS Number:
    6226-79-5
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD00003892
    Molecular Formula:
    C22H12N4O13S4Na4
    Molecular Weight:
    760.6
    Specification Sheet SDS

  • Pararosaniline chloride

    Grade:
    Certifiable Grade
    Purity:
    ≥ 90% (Dye content)
    Synonym:
    Basic parafuchsin
    Catalog Number:
    00030
    Grade:
    Certifiable Grade
    CAS Number:
    569-61-9
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00001657
    Molecular Formula:
    C19H18N3Cl
    Molecular Weight:
    323.8
    Specification Sheet SDS
Back to top