-3%
Cresol Red Indicator Extra Pure Amaris Chemicals
Click to enlarge
Blackcurrant Liquid Flavour Food Grade Amaris Chemicals
Blackcurrant Liquid Flavour Food Grade
Back to products
Placeholder
Cupric Carbonate Extra Pure
LABORATORY GRADE

Cresol Red Indicator Extra Pure

Original price was: $ 18.00.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.

Add to compare
Add to wishlist
Category: 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

KEY ATTRIBUTES

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

Sale
Acetone Extra Pure Amaris Chemicals
Add to compare

Acetone Extra Pure

Original price was: $ 35.00.Current price is: $ 34.89.
Acetone Extra Pure is a highly volatile, flammable, and colorless liquid widely used as a powerful solvent in laboratory and industrial applications. Known for its exceptional ability to dissolve a wide range of substances, it is commonly employed for cleaning laboratory glassware, thinning resins, and removing organic residues. In the cosmetics and pharmaceutical industries, acetone is used in nail polish removers and formulation processes. Its high evaporation rate and purity make it suitable for analytical procedures and synthesis work, especially where contaminant-free solvents are essential. With a distinct odor and low boiling point, Acetone Extra Pure is an indispensable reagent for both routine and specialized chemical operations.
Add to wishlist
Add to cart
Quick view
-1%
Albumen from Egg Powder Extra Pure Amaris Chemicals
Add to compare

Albumen From Egg Powder Extra Pure

Original price was: $ 25.00.Current price is: $ 24.81.
Albumen from Egg Powder Extra Pure is a high-purity, finely milled powder derived from the whites of hen eggs, known for its exceptional binding, foaming, and emulsifying properties. This premium-grade product is widely used in biochemical research, microbiological media, and pharmaceutical formulations where high protein content and purity are essential. Its excellent solubility in water and consistent performance make it ideal for applications in diagnostics, nutritional studies, and electrophoresis. In addition, it serves as a reliable protein source in specialized dietary products and laboratory-grade food testing. To preserve its functionality and shelf life, Albumen Powder should be stored in a tightly sealed container, away from moisture and heat.  
Add to wishlist
Add to cart
Quick view
-1%
Aluminium Ammonium Sulphate Extra Pure Amaris Chemicals
Add to 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
Add to cart
Quick view
-1%
Aluminium Chloride Hydrated Extra Pure Amaris Chemicals
Add to compare

Aluminium Chloride Hydrated Extra Pure

Original price was: $ 26.00.Current price is: $ 25.67.
Aluminium Chloride Hydrated Extra Pure is a high-purity, white to pale yellow crystalline compound containing bound water molecules, making it less reactive than its anhydrous counterpart but still highly effective in various laboratory applications. It is commonly used in aqueous-phase reactions, coordination chemistry, and as a reagent for studying aluminum ion behavior in solution. The hydrated form offers enhanced stability and ease of handling, making it suitable for educational experiments, buffer formulations, and inorganic synthesis where precise aluminum content is required. Its extra pure grade ensures minimal interference from impurities, supporting accurate and reproducible results in analytical and research settings. Proper storage in a cool, dry place is essential to prevent further hydration or contamination.  
Add to wishlist
Add to cart
Quick view
-2%
Aluminium Nitrate Extra Pure Amaris Chemicals
Add to compare

Aluminium Nitrate Extra Pure

Original price was: $ 23.00.Current price is: $ 22.54.
Aluminium Nitrate Extra Pure is a high-purity, white crystalline compound that is highly soluble in water and widely used in laboratory chemistry for analytical, synthesis, and research purposes. It serves as a reliable source of aluminum ions in solution, making it valuable in qualitative analysis, coordination chemistry, and materials science studies. This compound is often utilized in the preparation of other aluminum salts, as a nitrating agent, and in controlled oxidation reactions. Its extra pure grade guarantees minimal interference from contaminants, ensuring accurate, reproducible results in sensitive experimental work. Aluminium Nitrate should be stored in tightly sealed containers, away from moisture and incompatible substances, due to its oxidizing nature and hygroscopicity.
Add to wishlist
Add to cart
Quick view
-1%
Aluminium Sulphate Hydrous Extra Pure Amaris Chemicals
Add to compare

Aluminium Sulphate Hydrous Extra Pure

Original price was: $ 18.00.Current price is: $ 17.89.
Aluminium Sulphate Hydrous Extra Pure is a high-purity, white to slightly off-white crystalline compound containing bound water molecules, commonly used in laboratory settings for analytical, inorganic, and coordination chemistry. It serves as a reliable source of aluminum ions in aqueous solutions and is frequently employed in precipitation reactions, dye fixation studies, and flocculation experiments. The hydrous form offers improved solubility and ease of handling, making it suitable for educational labs and controlled research environments. Its extra pure grade ensures minimal interference from impurities, enabling accurate, reproducible results in sensitive analytical procedures. To maintain its stability and prevent further hydration or contamination, it should be stored in well-sealed containers in a cool, dry place.  
Add to wishlist
Add to cart
Quick view
-4%
Ammonium Carbonate Extra Pure Amaris Chemicals
Add to compare

Ammonium Carbonate Extra Pure

Original price was: $ 18.00.Current price is: $ 17.34.

Ammonium Carbonate Extra Pure is a high-quality, white crystalline solid widely used across various scientific, industrial, and food-related applications. Manufactured to stringent purity standards, this compound is ideal for laboratories and processes that demand high-grade reagents. With its characteristic ammonia-like odor and ability to decompose upon heating, ammonium carbonate plays a versatile role in both chemical reactions and physical processes.

In aqueous solution, ammonium carbonate breaks down into ammonium bicarbonate and ammonium carbamate, further releasing ammonia (NH₃) and carbon dioxide (CO₂) upon heating. This property makes it especially useful in applications that require controlled gas release or temporary pH modification.

Add to wishlist
Add to cart
Quick view
-2%
Ammonium Chloride Extra Pure Amaris Chemicals
Add to compare

Ammonium Chloride Extra Pure

Original price was: $ 19.00.Current price is: $ 18.65.
Ammonium Chloride Extra Pure is a high-purity, white crystalline salt widely used in laboratory chemistry as a source of ammonium ions and chloride ions for analytical, inorganic, and biochemical applications. It plays a key role in preparing buffer solutions, especially in conjunction with ammonia, and is commonly used in qualitative analysis, electrochemical studies, and metal treatment experiments. In addition, it serves as a reagent in synthesis reactions and as a nitrogen source in microbial culture media. The extra pure grade ensures high consistency and minimal contaminants, making it suitable for precise and sensitive laboratory work. It should be stored in a cool, dry place in well-sealed containers to maintain stability and prevent moisture absorption.
Add to wishlist
Add to cart
Quick view