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 (9,151)

Tissue Stain Blocking Reagents (82)

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1,831 – 1,845 of 7,073 results

1,831

Modified Methyl Orange Indicator, 0.1% Methyl Orange-Xylene Cyanole, Reagents

Modified Methyl Orange Indicator, 0.1% Methyl Orange-Xylene Cyanole, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.1%
CAS	2650-17-1
Color	Blue to Green
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Modified Methyl Orange Indicator, 0.1% Methyl Orange-Xylene Cyanole
Grade	Reagent
Synonym	Methyl Orange-Xylene Cyanole
Specific Gravity	1.001

1,832

Bromophenol Blue, 0.1% Aqueous, Reagents

Bromophenol Blue, 0.1% Aqueous, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.1%
CAS	62625-28-9
Color	Dark Reddish Purple
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Bromophenol Blue, 0.1% Aqueous
Grade	Reagent
Synonym	3',3'',5',5''-Tetrabromosulfonphthalein, Tetrabromophenol blue, Bromphenol blue
Specific Gravity	1.0001

1,833

Phenolphthalein Indicator, 0.25% w/v in Methanol, Reagents

Phenolphthalein Indicator, 0.25% w/v in Methanol, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	65°C
Percent Purity	0.25%
CAS	77-09-8
Color	Colorless
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Phenolphthalein Indicator, 0.25% w/v in Methanol
Grade	Reagent
Synonym	3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
Molecular Formula	C20H14O4/CH3OH
Specific Gravity	0.8

1,834

Reagents Holdings Llc Chrome Azurol S (Mordant Blue 29, CI 43825), Reagents

Chrome Azurol S (Mordant Blue 29, CI 43825), Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,835

Methyl Red, ACS Reagent (Free Acid) (Acid Red 2 Not water soluble), Reagents

CAS: 493-52-7 Molecular Formula: C15H15N3O2 Molecular Weight (g/mol): 269.30 InChI Key: CEQFOVLGLXCDCX-UHFFFAOYSA-N Synonym: Acid Red 2, 2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic Acid IUPAC Name: 2-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzoic acid SMILES: CN(C)C1=CC=C(C=C1)N=NC1=CC=CC=C1C(O)=O

Pricing & Availability
Specifications

CAS	493-52-7
Molecular Weight (g/mol)	269.30
SMILES	CN(C)C1=CC=C(C=C1)N=NC1=CC=CC=C1C(O)=O
Synonym	Acid Red 2, 2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic Acid
IUPAC Name	2-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzoic acid
InChI Key	CEQFOVLGLXCDCX-UHFFFAOYSA-N
Molecular Formula	C15H15N3O2

1,836

Reagents Holdings Llc Malachite Green Oxalate (Basic Green 4), Reagents

CAS: 2437-29-8 Molecular Formula: C52H54N4O12 Molecular Weight (g/mol): 927.02 InChI Key: CNYGFPPAGUCRIC-UHFFFAOYSA-L Synonym: Basic Green 4 IUPAC Name: bis(bis[4-(dimethylamino)phenyl](phenyl)methylium) oxalic acid dihydrogen oxalate SMILES: OC(=O)C(O)=O.OC(=O)C([O-])=O.OC(=O)C([O-])=O.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C

Pricing & Availability
Specifications

CAS	2437-29-8
Molecular Weight (g/mol)	927.02
SMILES	OC(=O)C(O)=O.OC(=O)C([O-])=O.OC(=O)C([O-])=O.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C
Synonym	Basic Green 4
IUPAC Name	bis(bis[4-(dimethylamino)phenyl](phenyl)methylium) oxalic acid dihydrogen oxalate
InChI Key	CNYGFPPAGUCRIC-UHFFFAOYSA-L
Molecular Formula	C52H54N4O12

1,837

Phenolphthalein, 0.5% Aqueous, Reagents

CAS: 7732-18-5 Molecular Formula: H2O Molecular Weight (g/mol): 18.02 InChI Key: XLYOFNOQVPJJNP-UHFFFAOYSA-N Synonym: 3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one IUPAC Name: water SMILES: O

Pricing & Availability
Specifications

CAS	7732-18-5
Molecular Weight (g/mol)	18.02
SMILES	O
Synonym	3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
IUPAC Name	water
InChI Key	XLYOFNOQVPJJNP-UHFFFAOYSA-N
Molecular Formula	H2O

1,838

Reagents Holdings Llc Bromocresol Green, Methyl Red TS, Reagents

CAS: 64-17-5 Molecular Formula: C2H6O Molecular Weight (g/mol): 46.07 InChI Key: LFQSCWFLJHTTHZ-UHFFFAOYSA-N Synonym: Bromcresol Green-Methyl Red, MRBG IUPAC Name: ethanol SMILES: CCO

Pricing & Availability
Specifications

CAS	64-17-5
Molecular Weight (g/mol)	46.07
SMILES	CCO
Synonym	Bromcresol Green-Methyl Red, MRBG
IUPAC Name	ethanol
InChI Key	LFQSCWFLJHTTHZ-UHFFFAOYSA-N
Molecular Formula	C2H6O

1,839

Reagents Holdings Llc Heartwood Indicator B, Reagents

Heartwood Indicator B, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,840

Phenolphthalein, Reagent ACS Meets USP and ACS Specifications, Reagents

CAS: 77-09-8 Molecular Formula: C20H14O4 Molecular Weight (g/mol): 318.33 InChI Key: KJFMBFZCATUALV-UHFFFAOYSA-N Synonym: 3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one IUPAC Name: 3,3-bis(4-hydroxyphenyl)-1,3-dihydro-2-benzofuran-1-one SMILES: OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1

Pricing & Availability
Specifications

CAS	77-09-8
Molecular Weight (g/mol)	318.33
SMILES	OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1
Synonym	3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
IUPAC Name	3,3-bis(4-hydroxyphenyl)-1,3-dihydro-2-benzofuran-1-one
InChI Key	KJFMBFZCATUALV-UHFFFAOYSA-N
Molecular Formula	C20H14O4

1,841

Methylene Blue, 1% in Ethanol, Certified, LabChem™

Pricing & Availability
Specifications

Boiling Point	78°C
Linear Formula	C₁₆H₁₈N₃SCl
Color	Blue
Physical Form	Liquid
Chemical Name or Material	Methylene Blue
Grade	Certified
Identification	Passes Test
Absorbance	Passes Test
Name Note	1% in Ethanol
CAS	61-73-4
Health Hazard 3	GHS P Statement Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Keep away from heat, sparks, open flames, hot surfaces. No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Use explosion-proof electrical, ventilating, lighting equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe mist, vapors, spray. Do not eat, drink or smoke when using this product. Wear protective gloves, eye protection. Wash exposed skin thoroughly after handling. If exposed or concerned: Get medical advice/attention. If swallowed: Rinse mouth. Call a poison center/doctor if you feel unwell. If on skin (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. In case of fire: Use alcohol resistant foam, carbon dioxide (CO2), extinguishing powder to extinguish. Store locked up in a cool, well-ventilated place. Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information	Carbon monoxide; Carbon dioxide; May release flammable gases
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Harmful if swallowed. Suspected of damaging fertility or the unborn child. Causes damage to organs (central nervous system, optic nerve, liver, kidneys).
Flash Point	13°C
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	319.85
CAS Max %	1
Melting Point	-115°C

1,842

m-Cresol Purple Sodium Salt, Reagent Grade, LabChem™

CAS: 62625-31-4

Pricing & Availability
Specifications

CAS	62625-31-4

1,843

Starch Solution, 2% w/v, Mercury-Free, with Salicylic Acid Preservative, Reagents

Starch Solution, 2% w/v, Mercury-Free, with Salicylic Acid Preservative, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	2%
CAS	69-72-7
Color	White
Physical Form	Liquid
Chemical Name or Material	Starch Solution, 2% w/v, Mercury-Free, with Salicylic Acid Preservative
Grade	Reagent
Specific Gravity	1.02

1,844

Reagents Holdings Llc Phenolphthalein, 0.05% w/v in Reagent Alcohol, Reagents

CAS: 64-17-5 Molecular Formula: C2H6O Molecular Weight (g/mol): 46.07 InChI Key: LFQSCWFLJHTTHZ-UHFFFAOYSA-N Synonym: 3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one IUPAC Name: ethanol SMILES: CCO

Pricing & Availability
Specifications

CAS	64-17-5
Molecular Weight (g/mol)	46.07
SMILES	CCO
Synonym	3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
IUPAC Name	ethanol
InChI Key	LFQSCWFLJHTTHZ-UHFFFAOYSA-N
Molecular Formula	C2H6O

1,845

Methylene Blue, 1% w/v, Reagents

Methylene Blue, 1% w/v, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	1%
CAS	7220-79-3
Color	Blue
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Methylene Blue, 1% w/v
Grade	Reagent
Synonym	3,7-Bis(dimethylamino)phenothiazin-5-ium chloride Trihydrate, Basic Blue 9 Trihydrate, Color Index 52015
Specific Gravity	1.005

Staining Reagents

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