Sale
Cresol Red Indicator Extra Pure - Image 1
Cresol Red Indicator Extra Pure Amaris Chemicals
Cresol Red Indicator Extra Pure
Cresol Red Indicator Extra Pure Amaris Chemicals
Blackcurrant Liquid Flavour Food Grade Amaris Chemicals
Blackcurrant Liquid Flavour
Back to products
Cupric Carbonate Extra Pure Amaris Chemicals
Cupric Carbonate Extra Pure
LABORATORY GRADE

Cresol Red Indicator Extra Pure

Original price was: $ 17.50.Current price is: $ 17.43.

WhatsApp Order

Cresol Red Indicator Extra Pure is a high-purity pH indicator dye widely used in laboratory titrations, buffer solutions, and biochemical assays. It exhibits a clear color change from yellow to red over the pH range of approximately 7.2 to 8.8, making it suitable for detecting slight pH shifts in weakly basic environments. Its stable performance and extra pure grade ensure consistent results in analytical chemistry, molecular biology, and spectrophotometric applications. Ideal for use in precise pH monitoring, Cresol Red should be handled with care and stored away from light and moisture to preserve its integrity.

Compare
Add to wishlist
Categories: , Tags: , , , , , , ,
Description

Cresol Red Indicator Extra Pure

Primary Uses

  1. pH Indicator in Acid–Base Titrations
    • Cresol Red is a sulfonphthalein dye used to indicate pH changes with a distinct color transition:
      • Red in acidic (pH < 1.2)
      • Yellow in weakly acidic to neutral (pH ~2–8.8)
      • Purple in basic (pH > 8.8)
    • Used in strong acid–strong base titrations and buffer solution testing.
  2. Biochemical Buffer Marker
    • Frequently used in molecular biology as a tracking dye during gel electrophoresis to monitor sample migration.
  3. Teaching Tool in pH and Buffer Systems
    • Common in chemistry education labs to visually demonstrate pH changes, buffer capacity, and acid-base equilibria.
  4. Colorimetric pH Monitoring in Microplates or Solutions
    • Suitable for high-throughput pH monitoring in microplate-based biochemical or microbial assays.

Secondary Uses

  1. Dye for Protein and Nucleic Acid Electrophoresis
    • Sometimes added to loading buffers as a visible tracking marker in agarose or polyacrylamide gels.
  2. Component in Diagnostic Kits
    • Used in biochemical test kits where pH shifts signal enzymatic or metabolic activity.
  3. Model Compound for Dye Degradation Studies
    • Serves as a test dye in photodegradation, ozonation, or advanced oxidation studies to track environmental dye breakdown.
  4. Visual Endpoint Marker in Buffer Prep or CO₂ Testing
    • Applied in experiments where a quick visual confirmation of CO₂ absorption (via pH shift) is needed.
KEY PRODUCT FEATURES

1. Basic Identification Attributes

  • Chemical Name: Cresol Red
  • CAS Number: 1733-12-6
  • Chemical Formula: C₂₁H₁₈O₅S
  • Molar Mass: 366.43 g/mol
  • Synonyms: o-Cresolsulfonephthalein, Acid Red 7, Indicator Red
  • Grade: Extra Pure (Analytical Reagent grade)

2. Physical & Chemical Properties

  • Appearance: Reddish to brown-violet powder
  • Odor: Odorless
  • Solubility:
    • Soluble in ethanol and slightly soluble in water
  • pH Range (Indicator):
    • Color change from yellow to red: pH 7.2 to 8.8
  • Melting Point: >220 °C (decomposes)

3. Safety & Hazard Attributes

  • GHS Classification:
    • H302: Harmful if swallowed
    • H319: Causes serious eye irritation
  • NFPA Ratings:
    • Health: 2
    • Flammability: 1
    • Reactivity: 0
  • First Aid Measures:
    • Inhalation: Move to fresh air; seek medical attention if symptoms persist
    • Skin Contact: Wash thoroughly with soap and water
    • Eye Contact: Rinse cautiously for several minutes with clean water
    • Ingestion: Rinse mouth, seek medical advice

4. Storage & Handling Attributes

  • Storage Conditions:
    • Store tightly sealed in a dry, cool, and dark location
    • Protect from moisture and light
  • Handling Advice:
    • Wear gloves, lab coat, and eye protection
    • Avoid dust formation and inhalation

5. Regulatory & Compliance Attributes

  • EINECS Number: 217-168-8
  • REACH Status: Compliant
  • UN Number: Not classified as dangerous for transport in solid form

6. Applications in Laboratory

  • Primary Use:
    • pH indicator in analytical chemistry and titrations
  • Other Uses:
    • Buffer system pH monitoring
    • Electrophoresis loading dye
    • Enzyme or biochemical assays
    • Histological staining (in some modified protocols)
SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS 

  • PPE Required:
    • Lab coat
    • Nitrile gloves
    • Safety goggles or face shield
  • Handling:
    • Handle in a well-ventilated area
    • Avoid inhalation of dust or contact with eyes and skin
    • Weigh and prepare in designated indicator prep zones
  • Storage:
    • Store in tightly sealed amber container
    • Keep in a dry, cool place away from light and acids
    • Avoid humidity to preserve quality

FIRST AID MEASURES

  • Inhalation:
    • Move to fresh air
    • Seek medical attention if irritation or dizziness occurs
  • Skin Contact:
    • Wash thoroughly with soap and water
    • Remove contaminated clothing
  • Eye Contact:
    • Rinse immediately with water for at least 15 minutes
    • Get medical attention if irritation persists
  • Ingestion:
    • Rinse mouth
    • Do not induce vomiting—seek immediate medical help

FIREFIGHTING MEASURES

  • Flammability: Not highly flammable
  • Explosion Risk: Low under normal conditions
  • Extinguishing Media:
    • Use CO₂, dry powder, or foam
    • Avoid direct water spray
  • Firefighter Protection:
    • Use self-contained breathing apparatus

Related products

Aluminium Ammonium Sulphate Extra Pure Amaris Chemicals
Sale
Compare

Aluminium Ammonium Sulphate Extra Pure

Original price was: $ 18.00.Current price is: $ 17.83.

Aluminium Ammonium Sulphate Extra Pure, also known as ammonium alum, is a high-purity double salt composed of aluminum sulfate and ammonium sulfate, typically appearing as colorless or white crystalline granules. Valued for its excellent stability and solubility in water, it is widely used in analytical chemistry, dye mordanting, and laboratory reagent preparations. Its ability to precipitate proteins makes it useful in biochemical applications, while its astringent and antimicrobial properties support its role in pharmaceutical and cosmetic formulations. The extra pure grade ensures minimal impurities, making it suitable for high-precision scientific work. It should be stored in a tightly sealed container in a dry, cool area to prevent moisture absorption and maintain its effectiveness.

Add to wishlist
Aluminium Potassium Sulphate Hydrated Extra Pure Amaris Chemicals
Sale
Compare

Aluminium Potassium Sulphate Hydrated Extra Pure

Original price was: $ 19.00.Current price is: $ 18.74.

Aluminium Potassium Sulphate Hydrated Extra Pure, commonly known as potash alum, is a high-purity, colorless to white crystalline compound containing water of crystallization. It is widely used in laboratory settings for analytical chemistry, especially in the preparation of standard solutions, precipitation reactions, and as a source of aluminum ions. Its astringent and antiseptic properties also make it useful in biochemical and pharmaceutical experiments. The hydrated form offers improved handling and solubility in water, which supports its use in buffer systems and crystal growth studies. With minimal impurities, the extra pure grade ensures consistent and reliable results in sensitive research applications. It should be stored in a dry, cool environment in well-sealed containers to preserve its quality and prevent moisture loss.

 

Add to wishlist
Aluminium Sulphate Anhydrous Extra Pure Amaris Chemicals
Sale
Compare

Aluminium Sulphate Anhydrous Extra Pure

Original price was: $ 18.00.Current price is: $ 17.84.

Aluminium Sulphate Anhydrous Extra Pure is a high-purity, white crystalline or powdery solid commonly used in laboratory chemistry as a source of aluminum ions for precipitation, titration, and coordination studies. Its anhydrous form provides a concentrated and stable option for applications requiring precise control over water content, such as analytical reagent preparation, pH adjustment, and synthesis of other aluminum salts. This compound is also used in paper sizing experiments, dye fixation, and water treatment research. The extra pure grade ensures very low levels of contaminants, supporting accurate and reproducible results in sensitive experimental work. It should be stored in airtight containers in a dry area to prevent moisture absorption and preserve its chemical integrity.

 

Add to wishlist
Ammonium Acetate Extra Pure Amaris Chemicals
Sale
Compare

Ammonium Acetate Extra Pure

Original price was: $ 18.00.Current price is: $ 17.98.

Ammonium Acetate Extra Pure is a high-purity, white crystalline solid that is highly soluble in water and commonly used as a buffer component in laboratory and analytical chemistry. It is especially valuable in high-performance liquid chromatography (HPLC), mass spectrometry, and biochemical assays where pH control and minimal ionic interference are essential. This compound also serves as a reagent in organic synthesis, particularly in the preparation of acetamides and other nitrogen-containing compounds. Its extra pure grade ensures excellent consistency, low contaminant levels, and compatibility with sensitive instrumentation. To maintain stability and prevent moisture absorption, it should be stored in a tightly sealed container in a cool, dry environment.

 

Add to wishlist
Ammonium Ferrous Sulphate Extra Pure Amaris Chemicals
Sale
Compare

Ammonium Ferrous Sulphate Extra Pure

Original price was: $ 18.00.Current price is: $ 17.23.

Ammonium Ferrous Sulphate Extra Pure, also known as Mohr’s salt, is a high-purity, light green crystalline compound composed of ferrous sulfate and ammonium sulfate. It is widely used in laboratory settings as a stable source of ferrous ions for redox titrations, particularly in permanganometric and dichromate analyses. Its stability in air, compared to other iron(II) salts, makes it ideal for preparing standard solutions and studying oxidation-reduction reactions. This compound is also valuable in coordination chemistry and iron metabolism research. The extra pure grade ensures minimal contamination, supporting precise analytical and experimental results. It should be stored in tightly sealed containers in a cool, dry place to prevent oxidation and maintain its integrity.

Add to wishlist
Ammonium Formate Extra Pure Amaris Chemicals
Sale
Compare

Ammonium Formate Extra Pure

Original price was: $ 19.00.Current price is: $ 18.21.

Ammonium Formate Extra Pure is a high-purity, white crystalline compound commonly used in laboratory chemistry as a buffering agent, reducing agent, and reagent in organic synthesis. It plays a significant role in catalytic hydrogenation reactions, particularly in transfer hydrogenation using palladium or platinum catalysts. In analytical chemistry, it is frequently used in HPLC and mass spectrometry applications due to its volatility and compatibility with aqueous and organic mobile phases. The extra pure grade ensures extremely low levels of impurities, making it suitable for high-precision and instrument-sensitive applications. It should be stored in a cool, dry, and tightly sealed container to preserve its stability and prevent moisture uptake.

 

Add to wishlist
Ammonium Iodide Extra Pure Amaris Chemicals
Sale
Compare

Ammonium Iodide Extra Pure

Original price was: $ 17.00.Current price is: $ 16.78.

Ammonium Iodide Extra Pure is a high-purity, white to slightly yellow crystalline compound highly soluble in water and alcohol, commonly used in laboratory chemistry for analytical, synthetic, and photographic applications. It serves as a valuable source of iodide ions in organic and inorganic reactions, including halide exchange and the preparation of iodine-containing compounds. In analytical chemistry, it is used in iodometric titrations and as a reagent for detecting metal ions. The extra pure grade ensures exceptional chemical stability and low levels of impurities, supporting accurate, reproducible results in sensitive experiments. It should be stored in tightly sealed containers, away from light and moisture, to prevent decomposition and discoloration.

 

Add to wishlist
Sale
Compare

Barium Sulphate Extra pure

Original price was: $ 18.00.Current price is: $ 17.76.

Barium Sulphate Extra Pure is a high-purity, white, odorless crystalline powder known for its extreme insolubility in water and chemical inertness, making it highly useful in laboratory settings for qualitative analysis and gravimetric determinations. It is commonly employed in the detection and quantification of sulfate ions through precipitation reactions, as well as in studies involving solubility equilibria and surface chemistry. Its high density and stability also make it valuable in preparing calibration standards and radiopaque materials in research. The extra pure grade ensures minimal contamination, providing consistent and reliable results in sensitive analytical procedures. It should be stored in a dry, tightly sealed container to maintain its quality and prevent contamination.

Add to wishlist