Preservatives(food)
Flavor Enhancers
Acidulants
Sweeteners
Antioxidants
Colorants(food)
Nutraceutical Ingredients (food)
Nutrient Supplements
Emulsifiers
Collectors
Dust Suppressants
Explosives and Blasting Agents
Flocculants and Coagulants
Frothers
Leaching Agents
pH Modifiers
Precious Metal Extraction Agents
Antioxidants(plastic)
Colorants (Pigments, Dyes)
Fillers and Reinforcements
Flame Retardants
Monomers
Plasticizers
Polymerization Initiators
Stabilizers (UV, Heat)
Antifoaming Agents
Chelating Agents
Coagulants and Flocculants
Corrosion Inhibitors
Disinfectants and Biocides
Oxidizing Agents
pH Adjusters
Scale Inhibitors( water)
Antioxidants(cosmetic)
Emollients
Fragrances and Essential Oils
Humectants
Preservatives
Surfactants(cosmetic)
Thickeners
UV Filters
Fertilizers
Soil Conditioners
Plant Growth Regulators
Animal Feed Additives
Biostimulants
Pesticides (Herbicides, Insecticides, Fungicides)
Active Pharmaceutical Ingredients (APIs)
Excipients
Solvents(pharmaceutical)
Antibiotics
Antiseptics and Disinfectants
Vaccine Adjuvants
Nutraceutical Ingredients (pharmaceutical)
Analgesics & Antipyretics
Analytical Reagents
Solvents(lab)
Chromatography Chemicals
Spectroscopy Reagents
microbiology-and-cell-culture-reagents
Molecular Biology Reagents
Biochemical Reagents
Inorganic and Organic Standards
Laboratory Safety Chemicals
Specialty Laboratory Chemicals(Special Laboratory Equipment)
Demulsifiers
Hydraulic Fracturing Fluids
Scale Inhibitors(oil)
Surfactants(oil)
Drilling Fluids
Dyes and Pigments
Bleaching Agents
Softening Agents
Finishing Agents
Antistatic Agents
Admixtures
Waterproofing Agents
Sealants and Adhesives
Curing Compounds
Concrete Repair Chemicals
Anti-Corrosion Coatings
Surfactants(cleaning)
Builders
Enzymes
Solvents (Cleaning)
Fragrances
Electronic Chemicals
Catalysts
Lubricants
Photographic Chemicals
Refrigerants
Automotive chemicals
Pyrotechnic Chemicals
Biodegradable Surfactants
Bio-based Solvents
Renewable Polymers
Carbon Capture Chemicals
Wastewater Treatment Chemicals
Pigments
Solvents(paint)
Specialty Coatings
Binders/Resins
Additives
Driers
Anti-Corrosion Agents
Functional Coatings
Application-Specific Coatings
Leavening Agents
Dough Conditioners
Flour Treatments
Fat Replacers
Decoratives
Preservatives(baking)
Plasticizers & Softeners
Reinforcing Agents
Adhesion Promoters
Vulcanizing Agents
Antidegradants
Blowing Agents
Fillers & Extenders
Accelerators & Retarders
Cresol Red Indicator Extra Pure
Original price was: $ 17.50.$ 17.43Current price is: $ 17.43.
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.
Cresol Red Indicator Extra Pure
Primary Uses
- 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.
- Cresol Red is a sulfonphthalein dye used to indicate pH changes with a distinct color transition:
- Biochemical Buffer Marker
- Frequently used in molecular biology as a tracking dye during gel electrophoresis to monitor sample migration.
- Teaching Tool in pH and Buffer Systems
- Common in chemistry education labs to visually demonstrate pH changes, buffer capacity, and acid-base equilibria.
- Colorimetric pH Monitoring in Microplates or Solutions
- Suitable for high-throughput pH monitoring in microplate-based biochemical or microbial assays.
Secondary Uses
- Dye for Protein and Nucleic Acid Electrophoresis
- Sometimes added to loading buffers as a visible tracking marker in agarose or polyacrylamide gels.
- Component in Diagnostic Kits
- Used in biochemical test kits where pH shifts signal enzymatic or metabolic activity.
- Model Compound for Dye Degradation Studies
- Serves as a test dye in photodegradation, ozonation, or advanced oxidation studies to track environmental dye breakdown.
- 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.
| PACK SIZE | 25 grams Plastic Tin |
|---|
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 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
Alizarin Extra Pure
Alizarin Extra Pure is a high-grade anthraquinone-based dye, presented as a reddish-brown crystalline powder, renowned for its vivid coloration and strong affinity for metal ions. It is primarily used in analytical chemistry as a complexometric indicator, especially for detecting aluminum, calcium, and other metal ions through color change. Due to its exceptional purity, it is also employed in histological staining, textile research, and pigment synthesis where precision and consistency are critical. Alizarin Extra Pure offers excellent stability and intense coloration, making it ideal for scientific, educational, and specialized industrial applications. Proper storage in a cool, dry environment is essential to maintain its effectiveness and prevent degradation.
Aluminium Ammonium Sulphate Extra Pure
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.
Aluminium Oxide Active Neutral Extra Pure
Aluminium Oxide Active Neutral Extra Pure is a high-purity, fine white powder known for its high surface area and neutral pH, making it ideal for chromatography, adsorption, and catalyst support in laboratory research. Its active form ensures excellent capacity for separating and purifying organic compounds without altering their chemical structure, especially in column chromatography applications. Commonly used in analytical, organic synthesis, and material science laboratories, it provides consistent performance in adsorption studies, drying of solvents, and reaction monitoring. The extra pure grade ensures extremely low levels of impurities, suitable for high-precision experimental work. To maintain its activity, it should be stored in airtight containers away from moisture and reactive chemicals.
Aluminium Sulphate Anhydrous Extra Pure
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.
Aluminium Sulphate Hydrous Extra Pure
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.
Ammonium Carbonate Extra Pure
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.
Ammonium Hydrogen Carbonate Extra Pure
Ammonium Hydrogen Carbonate Extra Pure, also known as ammonium bicarbonate, is a high-purity, white crystalline powder widely used in laboratory settings as a buffering agent, leavening agent, and source of ammonia and carbon dioxide in thermal decomposition studies. It is particularly useful in analytical chemistry for preparing buffer solutions and in gas evolution experiments due to its ability to decompose readily upon heating. In protein and enzyme work, it serves as a volatile buffer compatible with mass spectrometry. The extra pure grade ensures minimal contamination, supporting accurate and reproducible results in sensitive applications. It should be stored in tightly sealed containers in a cool, dry environment to prevent premature decomposition and loss of efficacy.
Barium Sulphate Extra pure
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.
