Indicators

• Appearance
• Red to dark brown

• Application
• Other , Used as a spectrophotometric reagent for zinc, cobalt, nickel, and other metal ions

• CAS No
• 6548-37-2

• Density
• 1.4 Gram per cubic centimeter(g/cm3)

• EINECS No
• 229-440-3

• Grade
• AR (Analytical Reagent)

• HS Code
• 38220090

• Ingredients
• Zincon (2-Hydroxy-1-(2-hydroxy-5-sulpho-phenylazo)-naphthalene-3,6-disulphonic acid sodium salt)

• Melting Point
• >300C (decomposes)

• Molecular Formula
• C19H14N2Na2O7S2

• Molecular Weight
• 508.43 g/mol

• Ph Level
• Neutral to slightly acidic

• Physical Form
• Powder

• Poisonous
• Other, Non-poisonous under normal laboratory use

• Product Type
• Laboratory Reagent

• Properties
• Analytical grade, highly pure, suitable for complexometric determinations of metal ions

• Purity
• 99%

• Shape
• other, Fine powder

• Shelf Life
• 36 months

• Smell
• Other, Odorless

• Solubility
• Soluble in water

• Storage
• Other, Store in a cool, dry place, tightly sealed

• Structural Formula
• [Provided on request; matches chemical name and CAS]

• Taste
• Other, Tasteless

• Usage
• Complexometric titrations, colorimetric analysis, metal ion determination

• Appearance
• Colorless liquid

• Application
• Other , Used as a pH indicator in titration and laboratory analysis

• CAS No
• 77-09-8

• Density
• 0.98 Gram per cubic centimeter(g/cm3)

• EINECS No
• 201-004-7

• Grade
• Laboratory Reagent (LR)

• HS Code
• 3822

• Ingredients
• Phenolphthalein, Ethanol, Deionized Water

• Melting Point
• 258-263C (pure Phenolphthalein)

• Molecular Formula
• C20H14O4

• Molecular Weight
• 318.32 g/mol

• Ph Level
• Color change between pH 8.2 and 10.0

• Physical Form
• Liquid

• Poisonous
• Other, Yes (Toxic if ingested or inhaled)

• Product Type
• pH Indicator Solution

• Properties
• Changes color in response to pH; colorless in acidic solutions, pink to fuchsia in alkaline solutions (pH 8.2 to 10)

• Purity
• Approximately 1% solution

• Shape
• other, Liquid form, no defined shape

• Shelf Life
• 12-24 months depending on storage conditions

• Smell
• Other, Slight alcohol odor

• Solubility
• Soluble in alcohol and slightly soluble in water

• Storage
• Other, Store in a cool, dry, and dark place; tightly closed bottle

• Structural Formula
• (Structural formula image/reference, C20H14O4)

• Taste
• Other, Not for consumption

• Usage
• Add a few drops to the test solution; observe color change for pH estimation

• Appearance
• White to light pink powder

• Application
• Other , Acidbase titrations, laboratory indicator

• CAS No
• 77-09-8

• Density
• 1.299 Gram per cubic centimeter(g/cm3)

• EINECS No
• 201-004-7

• Grade
• AR (Analytical Reagent)

• HS Code
• 32042000

• Ingredients
• Phenolphthalein

• Melting Point
• 258263C

• Molecular Formula
• C20H14O4

• Molecular Weight
• 318.33 g/mol

• Ph Level
• Colorless below pH 8.2, pink above pH 10.0

• Physical Form
• Powder

• Poisonous
• Other, Yes, toxic if ingested

• Product Type
• Laboratory Reagent

• Properties
• Acts as a pH indicator; colorless in acidic solution, pink to fuchsia in basic solution

• Purity
• 99%

• Shape
• other, Crystalline Powder

• Shelf Life
• 5 years

• Smell
• Other, Odorless

• Solubility
• Soluble in alcohol, slightly soluble in water

• Storage
• Other, Store in tightly sealed container, away from light, in a cool, dry place

• Structural Formula
• See product documentation or chemical literature

• Taste
• Other, Odorless, slightly bitter

• Usage
• Used as laboratory pH indicator and for educational demonstrations

• Appearance
• Dark brown to red powder

• Application
• Other , Laboratory, chemical analysis, pH indication

• CAS No
• 76-61-9

• EINECS No
• 200-973-2

• Grade
• AR (Analytical Reagent)

• HS Code
• 38220090

• Ingredients
• Thymol Blue

• Melting Point
• 221224 C

• Molecular Formula
• C27H30O5S

• Molecular Weight
• 466.59 g/mol

• Ph Level
• Color change from red (pH 1.2) to yellow (pH 2.8), and yellow (pH 8.0) to blue (pH 9.6)

• Physical Form
• Powder

• Poisonous
• Other, Non-poisonous for laboratory use

• Product Type
• Laboratory Chemical / Indicator

• Properties
• pH indicator, changes color over a wide pH range

• Purity
• >98%

• Shape
• other, Crystalline

• Shelf Life
• 5 years in proper storage conditions

• Smell
• Other, Odorless

• Solubility
• Slightly soluble in water, soluble in alcohol

• Storage
• Other, Store in a tightly closed container, away from light and moisture

• Structural Formula
• [See Product Label]

• Taste
• Other, Odorless, not for consumption

• Usage
• Used as a pH indicator in titrations and lab analyses

• Appearance
• Greenish-yellow powder

• Application
• Other , Used as pH indicator (acids, bases), analytical chemistry, laboratory reagent

• CAS No
• 76-60-8

• Density
• 1.8 Gram per cubic centimeter(g/cm3)

• EINECS No
• 200-971-2

• Grade
• AR (Analytical Reagent)

• HS Code
• 3822.19.00

• Ingredients
• Bromocresol Green

• Melting Point
• 218 C (decomposes)

• Molecular Formula
• C21H14Br4O5S

• Molecular Weight
• 698.00 g/mol

• Ph Level
• pH 3.8 (yellow) to 5.4 (blue)

• Physical Form
• Other, Powder / crystalline solid

• Poisonous
• Other, Not classified as poisonous, handle as laboratory chemical

• Product Type
• Indicator, Analytical Reagent (AR)

• Properties
• pH indicator, changes color from yellow to blue-green depending on pH; soluble in alcohol and slightly soluble in water

• Purity
• ~99%

• Shape
• other, Crystalline solid

• Shelf Life
• At least 3 years under proper storage conditions

• Smell
• Other, Odorless

• Solubility
• Slightly soluble in water, soluble in alcohol & acetone

• Storage
• Other, Store tightly closed, in a cool, dry place away from incompatible substances

• Structural Formula
• [Structural formula image not available in text format]

• Usage
• Prepare as indicator solution in suitable solvent, add to sample as per standard protocols

• Appearance
• Purple to pink powder

• Application
• Other , Chemical indicator in complexometric titrations (calcium, rare earth metals)

• CAS No
• 3051-09-0

• Density
• 1.82 Gram per cubic centimeter(g/cm3)

• EINECS No
• 221-136-6

• Grade
• AR (Analytical Reagent)

• HS Code
• 38220090

• Ingredients
• Ammonium purpurate

• Melting Point
• 240 C (decomposes)

• Molecular Formula
• C8H8N6O6

• Molecular Weight
• 320.20 g/mol

• Ph Level
• Neutral in water

• Physical Form
• Powder

• Poisonous
• Other, Non-poisonous

• Product Type
• Laboratory Chemical

• Properties
• Used as complexometric indicator for calcium detection

• Purity
• 98%

• Shape
• other, Crystalline

• Shelf Life
• 3 years

• Smell
• Other, No characteristic odor

• Solubility
• Slightly soluble in water

• Storage
• Other, Store in tightly closed container, dry, cool place

• Structural Formula
• Available on request

• Taste
• Odorless

• Usage
• Used for calcium titration by forming violet complexes

• Appearance
• Reddish brown to violet powder

• Application
• Other , Analytical reagent, indicator for complexometric titrations

• CAS No
• 3564-18-9

• Density
• 1.50 Gram per cubic centimeter(g/cm3)

• EINECS No
• 222-630-2

• Grade
• Laboratory Grade

• HS Code
• 3204

• Ingredients
• Eriochrome Cyanine R, inert stabilizers

• Melting Point
• 210C (decomposes)

• Molecular Formula
• C23H18N3NaO6S

• Molecular Weight
• 487.46 g/mol

• Ph Level
• Approx. 7 (1% aqueous solution)

• Physical Form
• Powder

• Poisonous
• Other, Yes, handle with care

• Product Type
• Chemical Compound

• Properties
• Water soluble, intense color, stable under dry conditions

• Purity
• 98%

• Shape
• other, Fine crystalline

• Shelf Life
• 36 months

• Smell
• Other, Odorless

• Solubility
• Soluble in water, slightly soluble in ethanol

• Storage
• Other, Store in tightly closed container, dry, cool and well-ventilated area

• Structural Formula
• [structure not displayable in text]

• Usage
• Used in laboratory for detection of calcium, magnesium, and other metals

• Appearance
• Red to orange liquid

• Application
• Other , Used as a pH indicator in laboratory analysis

• CAS No
• 493-52-7

• Density
• 1.0 Gram per cubic centimeter(g/cm3)

• EINECS No
• 207-776-1

• Grade
• Analytical Reagent (AR)

• HS Code
• 3822.00

• Ingredients
• Methyl Red, Water, Alcohol (Ethanol)

• Melting Point
• Not Applicable (solution)

• Molecular Formula
• C15H15N3O2

• Molecular Weight
• 269.30 g/mol

• Ph Level
• ~4.0

• Physical Form
• Liquid

• Poisonous
• Other, Yes, for laboratory use only

• Product Type
• Laboratory Chemical Solution

• Properties
• pH indicator, changes color at pH 4.4-6.2

• Purity
• Approx. 0.1% w/v

• Shape
• other, Solution

• Shelf Life
• 24 months

• Smell
• Other, Characteristic, faint alcohol odor

• Solubility
• Soluble in water, alcohol

• Storage
• Other, Store in tightly closed container, in cool and dark place

• Structural Formula
• C15H15N3O2

• Usage
• For acid-base titrations, indicator for pH detection

• Appearance
• Off-white to light tan crystalline powder

• Application
• Other , Used in colorimetric determination of nitrite in water analysis and as a diagnostic reagent

• CAS No
• 536-27-6

• EINECS No
• 208-629-5

• Grade
• Analytical Grade

• HS Code
• 32042000

• Ingredients
• N-(1-Naphthyl)ethylenediamine dihydrochloride

• Melting Point
• >300C (decomposes)

• Molecular Formula
• C12H16Cl2N2

• Molecular Weight
• 259.18 g/mol

• Ph Level
• 5.06.0 (1% solution)

• Physical Form
• Powder

• Poisonous
• Other, Non-poisonous under recommended usage

• Product Type
• Dye Intermediate

• Properties
• High color fastness, stable under normal conditions, easily soluble in water

• Purity
• 99% Min

• Shape
• other, Crystalline

• Shelf Life
• 3 years

• Smell
• Other, Odorless

• Solubility
• Easily soluble in water

• Storage
• Other, Store in cool, dry place, keep container tightly closed

• Structural Formula
• [C12H16Cl2N2]

• Taste
• Odorless

• Usage
• Professional laboratory and analytical uses

• Appearance
• Clear colorless liquid

• Application
• Other , Calibration of ORP/redox meters

• CAS No
• 7732-18-5

• Density
• 1.00 Gram per cubic centimeter(g/cm3)

• EINECS No
• 231-791-2

• Grade
• Analytical Reagent

• HS Code
• 38220090

• Ingredients
• Deionized water, chemical buffer, suitable ORP reference solution

• Melting Point
• 0C (main constituent)

• Molecular Formula
• H2O (main constituent)

• Molecular Weight
• 18.02 g/mol (main constituent)

• Ph Level
• Approx. 7.0

• Physical Form
• Liquid

• Poisonous
• NO

• Product Type
• ORP Solution

• Properties
• Stable calibration solution for ORP meters

• Purity
• 99%

• Refractive Rate
• 1.332 (water base)

• Shape
• other, Liquid

• Shelf Life
• 12-24 months

• Smell
• Other, No distinct smell

• Solubility
• Miscible in water

• Storage
• Other, Store in tightly closed container at room temperature away from direct sunlight

• Taste
• Odorless

• Usage
• Used to ensure accurate measurement of oxidation-reduction potential

• Appearance
• Dark brown-black powder

• Application
• Other , Complexometric titration indicator, especially for EDTA titrations of calcium and magnesium

• CAS No
• 1787-61-7

• Density
• 1.6 Gram per cubic centimeter(g/cm3)

• EINECS No
• 217-250-3

• Grade
• Technical Grade

• HS Code
• 3204

• Ingredients
• 1-(1-hydroxy-2-naphthylazo)-2-naphthol-4-sulfonic acid, sodium salt

• Melting Point
• >300C (decomposes)

• Molecular Formula
• C20H12N3NaO7S

• Molecular Weight
• 465.39 g/mol

• Ph Level
• 5.0 7.0 (1% aqueous sol.)

• Physical Form
• Powder

• Poisonous
• NO

• Product Type
• Chemical

• Properties
• Dark brown to black powder, used as complexometric indicator, soluble in water

• Purity
• 98.0%

• Refractive Rate
• Not determined

• Shape
• other, Amorphous

• Shelf Life
• 36 months

• Smell
• Other, Odorless

• Solubility
• Soluble in water, slightly soluble in ethanol

• Storage
• Other, Store in a cool, dry place, tightly closed container

• Structural Formula
• C20H12N3NaO7S

• Usage
• Analytical reagent in water hardness testing

• Appearance
• Orange-red

• Application
• Other , Used as a pH indicator in titrations

• CAS No
• 547-58-0

• Density
• 1.01 Gram per cubic centimeter(g/cm3)

• EINECS No
• 208-950-8

• Grade
• Analytical Reagent (AR)

• HS Code
• 32042090

• Ingredients
• Methyl Orange (Sodium Salt)

• Melting Point
• >300C (decomposes)

• Molecular Formula
• C14H14N3NaO3S

• Molecular Weight
• 327.34 g/mol

• Ph Level
• 4.4 to 6.2 (indicator range)

• Physical Form
• Liquid

• Poisonous
• YES

• Product Type
• Chemical Indicator

• Properties
• pH indicator, changes color in acidic and basic solutions

• Purity
• 99%

• Refractive Rate
• Not determined

• Shape
• other, Solution

• Shelf Life
• 36 months

• Smell
• Other, Odorless

• Solubility
• Soluble in water

• Storage
• Other, Store in cool, dry place, tightly closed

• Structural Formula
• [C14H14N3NaO3S]

• Usage
• Laboratory reagent for acid-base titration

• Appearance
• Reddish Violet Powder

• Application
• Other , Used as a pH indicator in titration and microbiological media

• CAS No
• 493-52-7

• Density
• 1.28 Gram per cubic centimeter(g/cm3)

• EINECS No
• 207-776-1

• Grade
• Laboratory/Analytical Grade

• HS Code
• 38220090

• Ingredients
• Methyl Red (sodium salt or free acid, depending on grade)

• Melting Point
• 179-181C

• Molecular Formula
• C15H15N3O2

• Molecular Weight
• 269.30 g/mol

• Ph Level
• Color change pH range: 4.4 (red) 6.2 (yellow)

• Physical Form
• Powder

• Poisonous
• Other, Yes, hazardous if ingested or inhaled

• Product Type
• Indicator

• Properties
• pH indicator, sensitive to acidic and slightly basic environments

• Purity
• 98% Min.

• Shape
• other, Crystalline Powder

• Shelf Life
• 24 months under recommended storage conditions

• Smell
• Other, Odorless

• Solubility
• Freely soluble in ethanol, slightly soluble in water

• Storage
• Other, Store in a tightly closed container, in a cool, dry, well-ventilated area

• Structural Formula
• [Structural formula image not shown]

• Usage
• Add to solutions with appropriate solvent for pH measurement

• Appearance
• Orange-Red Solution

• Application
• Other , Used as pH indicator in titration, analytical chemistry

• CAS No
• 547-58-0

• Density
• 1.02 Gram per cubic centimeter(g/cm3)

• EINECS No
• 208-950-8

• Grade
• Analytical Reagent (AR)

• HS Code
• 38220090

• Ingredients
• Methyl Orange, Distilled Water, Preservative

• Melting Point
• 135 C (decomposes)

• Molecular Formula
• C14H14N3NaO3S

• Molecular Weight
• 327.33 g/mol

• Ph Level
• Weakly acidic

• Physical Form
• Liquid

• Poisonous
• YES

• Product Type
• Laboratory Reagent

• Properties
• pH Indicator, changes color under acidic and basic conditions

• Purity
• 95-99%

• Shape
• other, Liquid

• Shelf Life
• 24 months

• Smell
• Other, Odorless

• Solubility
• Soluble in water

• Storage
• Other, Store in a cool, dry, well-ventilated area, away from direct sunlight

• Structural Formula
• [C14H14N3NaO3S]

• Usage
• Add several drops as an indicator in acid-base titrations

• Appearance
• Reddish-violet crystalline powder

• Application
• Other , Laboratory reagent, analytical chemistry, detection of rare earth metals, educational demonstrations

• CAS No
• 119-45-3

• EINECS No
• 204-317-3

• Grade
• PURE

• HS Code
• 29310099

• Ingredients
• Ammonium purpurate

• Melting Point
• Decomposes before melting

• Molecular Formula
• C10H7N7O2 . NH4

• Molecular Weight
• 303.23 g/mol

• Physical Form
• Powder

• Poisonous
• YES

• Product Type
• Laboratory Chemical

• Properties
• High purity, intense red-purple color, stable under recommended storage conditions

• Purity
• 99%

• Shape
• other, Crystalline

• Shelf Life
• 5 years

• Smell
• Other, Odorless

• Solubility
• Soluble in water, slightly soluble in alcohol

• Storage
• Other, Store in a tightly closed container in a cool, dry, and well-ventilated area

• Structural Formula
• C10H7N7O2 . NH4

• Taste
• Other, Not for consumption

• Usage
• Used in analytical chemistry and as a detection reagent for rare earths

• Appearance
• White to yellowish powder

• Application
• Other , Complexometric indicator, spectrophotometric analysis, laboratory reagent

• CAS No
• 66-71-7

• Density
• 1.26 Gram per cubic centimeter(g/cm3)

• EINECS No
• 200-651-2

• Grade
• Analytical Reagent (AR)

• HS Code
• 29339900

• Ingredients
• 1,10-Phenanthroline

• Melting Point
• 117121 C

• Molecular Formula
• C12H8N2

• Molecular Weight
• 180.21 g/mol

• Ph Level
• Neutral (as a solid)

• Physical Form
• Powder

• Poisonous
• YES

• Product Type
• Laboratory Chemical

• Properties
• Chelating agent, forms complexes with metal ions, acts as an oxidation-reduction indicator

• Purity
• >99%

• Refractive Rate
• Not applicable for powder

• Shape
• other, Crystalline

• Shelf Life
• 5 years if properly stored

• Solubility
• Slightly soluble in water, soluble in ethanol, chloroform, benzene

• Storage
• Other, Store in a cool, dry place, keep container tightly closed

• Structural Formula
• C12H8N2

• Taste
• Odorless

• Usage
• Determination of iron, copper and other metal ions; complex formation studies

• Appearance
• Dark red crystalline powder

• Application
• Other , Used as pH indicator, analytical reagent

• CAS No
• 493-52-7

• EINECS No
• 207-776-1

• Grade
• Laboratory Grade

• HS Code
• 32041390

• Ingredients
• Methyl Red

• Melting Point
• 179-182C

• Molecular Formula
• C15H15N3O2

• Molecular Weight
• 269.3 g/mol

• Ph Level
• pH indicator range 4.4 (red) to 6.2 (yellow)

• Physical Form
• Powder

• Poisonous
• YES

• Product Type
• Methyl Red Chemicals

• Properties
• pH indicator, Organic compound, Slightly soluble in water

• Purity
• 98%

• Shape
• other, Crystalline

• Shelf Life
• 2 years

• Smell
• Other, Odorless

• Solubility
• Slightly soluble in water, soluble in ethanol, ether

• Storage
• Other, Store in a tightly closed container, in a cool and dry place

• Structural Formula
• (provided in image, not in text)

• Usage
• Mainly for laboratory use as pH indicator, for analytical chemistry

• Appearance
• Light brown to reddish powder

• Application
• Other , Titrations, chemical analysis, educational demonstrations

• Density
• 1.2 Gram per cubic centimeter(g/cm3)

• Grade
• Laboratory Grade

• HS Code
• 38220090

• Ingredients
• Mixture of organic dyes

• Molecular Formula
• Proprietary mixture

• Ph Level
• Neutral to slightly alkaline

• Physical Form
• Powder

• Poisonous
• Other, Non-poisonous in recommended quantities

• Product Type
• Chemical Indicator

• Properties
• Changes color in response to chemical reactions; provides reliable endpoint indication

• Purity
• >99%

• Refractive Rate
• Not determined

• Shape
• other, Solid, granular

• Shelf Life
• Up to 2 years if stored properly

• Smell
• Other, Odorless

• Solubility
• Soluble in water

• Storage
• Other, Store in a cool, dry place away from direct sunlight

• Structural Formula
• Blend of organic compounds - not a single molecule

• Taste
• Odorless

• Usage
• Used as an indicator in laboratory titration procedures