Staining Reagents

Stains, staining systems, and blocking agents in a variety of types, grades, molecular weights, purities, and pH ranges; used to elucidate important structures of microorganisms including bacteria, viruses, protozoa, etc.

Stains and Dyes (9,318)

Tissue Stain Blocking Reagents (81)

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1,186 – 1,200 of 7,270 results

1,186

StatLab™ Select Eosin Stain

Alcoholic and acidified formulation producing a cytoplasmic stain with three distinct color variations in a short amount of staining time.

Pricing & Availability

1,187

Bromocresol Purple, 0.04% Aqueous, pH 5.3 to 6.8 Yellow to Purple, Certified, LabChem™

CAS: 62625-30-3 Molecular Formula: C21H15Br2NaO5S Molecular Weight (g/mol): 562.204 InChI Key: KVSJYIXUWNOWBD-UGAWPWHASA-M PubChem CID: 23665568 IUPAC Name: sodium;2-[(E)-(3-bromo-4-hydroxy-5-methylphenyl)-(3-bromo-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate SMILES: CC1=CC(=C(C2=CC=CC=C2S(=O)(=O)[O-])C3=CC(=C(C(=C3)Br)O)C)C=C(C1=O)Br.[Na+]

Pricing & Availability
Specifications

PubChem CID	23665568
CAS	62625-30-3
Molecular Weight (g/mol)	562.204
SMILES	CC1=CC(=C(C2=CC=CC=C2S(=O)(=O)[O-])C3=CC(=C(C(=C3)Br)O)C)C=C(C1=O)Br.[Na+]
IUPAC Name	sodium;2-[(E)-(3-bromo-4-hydroxy-5-methylphenyl)-(3-bromo-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate
InChI Key	KVSJYIXUWNOWBD-UGAWPWHASA-M
Molecular Formula	C21H15Br2NaO5S

1,188

Bromocresol Green - Methyl Red, Aqueous, for Alkalinity, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₁H₁₄Br₄O₅S·Na
Color	Blue to Blue/Green
Physical Form	Liquid
Chemical Name or Material	Bromocresol Green - Methyl Red
Grade	Certified
Identification	Passes Test
Density	1g/mL
Name Note	Aqueous, for Alkalinity
CAS	62625-32-5
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
Decomposition Information	Carbon monoxide; Carbon dioxide; Nitrogen oxides; Sulfur compounds
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
Recommended Storage	Room Temperature
Formula Weight	720.06
Specific Gravity	1g/mL
CAS Max %	0.1

1,189

Starch Indicator, Preserved with Chloroform (Mercury Free), Certified, 1%, LabChem™

Pricing & Availability
Specifications

Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Starch Indicator
Grade	Certified
Identification	Passes Test
Density	1g/mL
Name Note	Preserved with Chloroform (Mercury Free)
Percent Purity	1%
CAS	64-17-5
Health Hazard 3	GHS P Statement Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Wear protective gloves/eye protection/face protection. If exposed or concerned: Get medical attention. Store locked up. Dispose of contents/container in accordance with local, state and federal regulations.
Decomposition Information	Hydrogen chloride; Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Suspected of causing cancer (Inhalation).
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Warning
Recommended Storage	Room Temperature
Specific Gravity	1g/mL
CAS Max %	0.005
Suitability	Passes Test

1,190

Phenol 99.5+%, TCI America™

CAS: 108-95-2 Molecular Formula: C6H6O Molecular Weight (g/mol): 94.11 MDL Number: MFCD00002143 InChI Key: ISWSIDIOOBJBQZ-UHFFFAOYSA-N PubChem CID: 996 ChEBI: CHEBI:15882 IUPAC Name: phenol SMILES: OC1=CC=CC=C1

Pricing & Availability
Specifications

PubChem CID	996
CAS	108-95-2
Molecular Weight (g/mol)	94.11
ChEBI	CHEBI:15882
MDL Number	MFCD00002143
SMILES	OC1=CC=CC=C1
IUPAC Name	phenol
InChI Key	ISWSIDIOOBJBQZ-UHFFFAOYSA-N
Molecular Formula	C6H6O

1,191

Ferroin Oxidation-Reduction Indicator, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	FeSO₄·7H₂O
Color	Red
Physical Form	Liquid
Chemical Name or Material	Ferroin Oxidation-Reduction Indicator
Grade	Certified
Identification	Passes Test
Density	1g/mL
CAS	7782-63-0
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
Decomposition Information	Nitrogen oxides; Carbon monoxide; Carbon dioxide; Sulfur compounds
Health Hazard 2	GHS H Statement Solution is not hazardous.
Packaging	Amber Glass
Solubility Information	Soluble in water
Recommended Storage	Room Temperature
Formula Weight	278.01
Specific Gravity	1g/mL
CAS Max %	0.7
Suitability	Passes Test

1,192

Evans Blue 80.0+%, TCI America™

CAS: 314-13-6 Molecular Formula: C34H24N6Na4O14S4 Molecular Weight (g/mol): 960.79 MDL Number: MFCD00004021 InChI Key: KBNIFDASRCWYGC-GXNXWABVSA-J PubChem CID: 24832074 IUPAC Name: tetrasodium (6E)-4-amino-6-[2-(4'-{2-[(2E)-8-amino-1-oxo-5,7-disulfonato-1,2-dihydronaphthalen-2-ylidene]hydrazin-1-yl}-3,3'-dimethyl-[1,1'-biphenyl]-4-yl)hydrazin-1-ylidene]-5-oxo-5,6-dihydronaphthalene-1,3-disulfonate SMILES: [Na+].[Na+].[Na+].[Na+].CC1=CC(=CC=C1N\N=C1/C=CC2=C(C=C(C(N)=C2C1=O)S([O-])(=O)=O)S([O-])(=O)=O)C1=CC=C(N\N=C2/C=CC3=C(C=C(C(N)=C3C2=O)S([O-])(=O)=O)S([O-])(=O)=O)C(C)=C1

Pricing & Availability
Specifications

PubChem CID	24832074
CAS	314-13-6
Molecular Weight (g/mol)	960.79
MDL Number	MFCD00004021
SMILES	[Na+].[Na+].[Na+].[Na+].CC1=CC(=CC=C1N\N=C1/C=CC2=C(C=C(C(N)=C2C1=O)S([O-])(=O)=O)S([O-])(=O)=O)C1=CC=C(N\N=C2/C=CC3=C(C=C(C(N)=C3C2=O)S([O-])(=O)=O)S([O-])(=O)=O)C(C)=C1
IUPAC Name	tetrasodium (6E)-4-amino-6-[2-(4'-{2-[(2E)-8-amino-1-oxo-5,7-disulfonato-1,2-dihydronaphthalen-2-ylidene]hydrazin-1-yl}-3,3'-dimethyl-[1,1'-biphenyl]-4-yl)hydrazin-1-ylidene]-5-oxo-5,6-dihydronaphthalene-1,3-disulfonate
InChI Key	KBNIFDASRCWYGC-GXNXWABVSA-J
Molecular Formula	C34H24N6Na4O14S4

1,193

Methylthymol Blue Sodium Salt 95.0+%, TCI America™

CAS: 1945-77-3 Molecular Formula: C37H44N2Na4O13S Molecular Weight (g/mol): 848.779 MDL Number: MFCD00148905 InChI Key: LGVVZVZPOQJZKT-UHFFFAOYSA-N PubChem CID: 131850582 IUPAC Name: 2-[[5-[3-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxymethyl)amino]acetic acid;sodium SMILES: CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)CN(CC(=O)O)CC(=O)O)O)C(C)C)C(C)C)O)CN(CC(=O)O)CC(=O)O.[Na].[Na].[Na].[Na]

Pricing & Availability
Specifications

PubChem CID	131850582
CAS	1945-77-3
Molecular Weight (g/mol)	848.779
MDL Number	MFCD00148905
SMILES	CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)CN(CC(=O)O)CC(=O)O)O)C(C)C)C(C)C)O)CN(CC(=O)O)CC(=O)O.[Na].[Na].[Na].[Na]
IUPAC Name	2-[[5-[3-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxymethyl)amino]acetic acid;sodium
InChI Key	LGVVZVZPOQJZKT-UHFFFAOYSA-N
Molecular Formula	C37H44N2Na4O13S

1,194

Bromothymol Blue Indicator, 0.04% (w/v), Ricca Chemical

For Glassware Residue Detection

Pricing & Availability
Specifications

Percent Purity	0.04% W/V
CAS	7732-18-5
Color	Dark Blue
pH	6.70 to 6.90
Packaging	Natural Poly Bottle
Grade	Indicator

1,195

Phenolphthalein, 1% In 60% Isopropanol, pH 8.3 to 10.0 Colorless to Pink, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₀H₁₄O₄
Color	Colorless to Pink
Physical Form	Liquid
Chemical Name or Material	Phenolphthalein
Grade	Certified
Identification	Passes Test
CAS	77-09-8
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Causes serious eye irritation. May cause respiratory irritation. Suspected of causing cancer.
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
EINECS Number	200-661-7
Formula Weight	318.32
CAS Max %	1

1,196

Food Yellow No. 5, TCI America™

CAS: 2783-94-0 Molecular Formula: C16H10N2Na2O7S2 Molecular Weight (g/mol): 452.363 MDL Number: MFCD00036437 InChI Key: TXVRKNUZLYFDTJ-UHFFFAOYSA-L PubChem CID: 6850717 IUPAC Name: disodium;6-oxo-5-[(4-sulfonatophenyl)hydrazinylidene]naphthalene-2-sulfonate SMILES: C1=CC(=CC=C1NN=C2C3=C(C=CC2=O)C=C(C=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	6850717
CAS	2783-94-0
Molecular Weight (g/mol)	452.363
MDL Number	MFCD00036437
SMILES	C1=CC(=CC=C1NN=C2C3=C(C=CC2=O)C=C(C=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Name	disodium;6-oxo-5-[(4-sulfonatophenyl)hydrazinylidene]naphthalene-2-sulfonate
InChI Key	TXVRKNUZLYFDTJ-UHFFFAOYSA-L
Molecular Formula	C16H10N2Na2O7S2

1,197

Naphthol Yellow S Hydrate 98.0+%, TCI America™

CAS: 846-70-8 Molecular Formula: C10H4N2Na2O8S Molecular Weight (g/mol): 358.188 MDL Number: MFCD00003958 InChI Key: CTIQLGJVGNGFEW-UHFFFAOYSA-L Synonym: 2,4-Dinitro-1-naphthol-7-sulfonic Acid Disodium Salt, Disodium 2,4-Dinitro-1-naphthol-7-sulfonate, Disodium 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonate, 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic Acid Disodium Salt, Flavianic Acid Disodium Salt, Acid Ye PubChem CID: 2724063 ChEBI: CHEBI:87219 IUPAC Name: disodium;5,7-dinitro-8-oxidonaphthalene-2-sulfonate SMILES: C1=CC2=C(C=C1S(=O)(=O)[O-])C(=C(C=C2[N+](=O)[O-])[N+](=O)[O-])[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	2724063
CAS	846-70-8
Molecular Weight (g/mol)	358.188
ChEBI	CHEBI:87219
MDL Number	MFCD00003958
SMILES	C1=CC2=C(C=C1S(=O)(=O)[O-])C(=C(C=C2[N+](=O)[O-])[N+](=O)[O-])[O-].[Na+].[Na+]
Synonym	2,4-Dinitro-1-naphthol-7-sulfonic Acid Disodium Salt, Disodium 2,4-Dinitro-1-naphthol-7-sulfonate, Disodium 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonate, 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic Acid Disodium Salt, Flavianic Acid Disodium Salt, Acid Ye
IUPAC Name	disodium;5,7-dinitro-8-oxidonaphthalene-2-sulfonate
InChI Key	CTIQLGJVGNGFEW-UHFFFAOYSA-L
Molecular Formula	C10H4N2Na2O8S

1,198

Bromocresol Green-Methyl Red Mixed Indicator, Ricca Chemical

Pricing & Availability
Specifications

CAS	845-10-3
Color	Dark Brown
Physical Form	Liquid
Packaging	Natural Poly Bottle
CAS Min %	0.02
Chemical Name or Material	Bromocresol Green-Methyl Red Mixed Indicator
Grade	Indicator
Solvent or Matrix	Aqueous Solution
CAS Max %	0.02

1,199

StatLab Poly Scientific Chromic Acid 5% Aqueous

Used in the Gomori’s methenamine staining procedure for effective detection of fungi in tissue sections.

Pricing & Availability

1,200

Gram's Iodine, dilute Lugol's Iodine, Ricca Chemical

For Gram Staining

Pricing & Availability
Specifications

Product Type	Gram Iodine, Lugol's Iodine
Color	Brown
Packaging	Amber Glass Bottle

Staining Reagents

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StatLab™ Select Eosin Stain GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Bromocresol Purple, 0.04% Aqueous, pH 5.3 to 6.8 Yellow to Purple, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

StatLab™ Select Eosin Stain

Bromocresol Purple, 0.04% Aqueous, pH 5.3 to 6.8 Yellow to Purple, Certified, LabChem™