Product Name: Phenol Red
Chemical Name: Phenolsulfonphthalein
CAS Number: 143-74-8
Synonyms: Phenol Red, Phenolsulfonphthalein, pH Indicator
Recommended Use: Laboratory chemical, pH indicator, medical testing
Supplier Details: Chemical supply companies for laboratory and industrial use
Contact Information: Emergency phone numbers provided by chemical supplier, typically available 24 hours
GHS Classification: Not classified as hazardous under GHS standards for most laboratory settings
Physical Hazards: Dust may irritate respiratory tract
Health Hazards: May cause mild eye or skin irritation; ingestion can cause discomfort, nausea, or vomiting
Environmental Hazards: Avoid large release into environment to prevent localized effect
Pictograms: None required under GHS; precautionary statements recommended
Signal Word: None assigned due to low acute toxicity
Hazard Statements: May cause mild irritation to eyes, skin, and respiratory system; not acutely toxic
Chemical Name: Phenol Red
CAS Number: 143-74-8
EC Number: 205-609-7
Concentration: 98–100% pure substance in laboratory chemical form
Impurities: Minimal; supplier will specify any trace contaminants
Inhalation: Move person to fresh air; seek medical attention if symptoms persist
Skin Contact: Remove any contaminated clothing; wash skin thoroughly with soap and water
Eye Contact: Flush eyes gently with water for 15 minutes; seek medical attention if irritation develops
Ingestion: Rinse mouth, do not induce vomiting, seek medical advice if feeling unwell
Most Important Symptoms and Effects: Irritation, redness, coughing, or mild gastrointestinal upset possible with exposure
Immediate Medical Attention: Not required unless symptoms are severe or persist
Suitable Extinguishing Media: Use carbon dioxide, dry chemical powder, foam, or water spray
Unsuitable Extinguishing Media: Direct water stream may spread powder; focus on targeted application
Specific Hazards Arising from Chemical: Releases carbon oxides and sulfur oxides in case of fire
Protective Equipment: Firefighters should wear suitable protective clothing and self-contained breathing apparatus
Special Precautions: Avoid breathing fumes; control runoff water to avoid contamination
Personal Precautions: Limit dust formation, wear gloves, eye protection, and a dust mask if needed
Environmental Precautions: Prevent entry into drains, sewers, or surface water
Methods for Cleanup: Sweep up spills using methods that minimize dust, transfer to a labeled waste container
Decontamination Procedures: Clean spill area with water and detergent after removal of majority of material
Handling Precautions: Use in well-ventilated space, avoid inhalation of dust and contact with skin or eyes
Safe Storage: Keep container tightly closed, store in cool and dry place, protect from moisture and light
Packaging Materials: Use original containers or chemically compatible alternatives; label clearly
Incompatible Materials: Strong oxidizing agents, strong acids
Hygiene Precautions: Wash hands thoroughly after handling, avoid eating or drinking nearby
Occupational Exposure Limits: None established for phenol red; general dust limits may apply
Engineering Controls: Use local exhaust ventilation or fume hood in large-scale or frequent use
Eye Protection: Safety glasses or goggles
Skin Protection: Nitrile, rubber, or latex gloves
Body Protection: Lab coat or apron recommended
Respiratory Protection: Not usually required for small-scale use; use dust mask if dust levels are high
Environmental Protection: Procedures in place to prevent material release outside controlled areas
Appearance: Red to purple powder or crystalline solid
Odor: Odorless or faint phenolic scent
Melting Point: 270–273°C (decomposition)
Boiling Point: Not applicable (decomposes before boiling)
pH: 6.8 to 8.2 in aqueous solution
Solubility: Slightly soluble in water, better in alcohol
Vapor Pressure: Not applicable (solid at room temperature)
Partition Coefficient (n-octanol/water): No data available
Flash Point: Not flammable in normal laboratory use
Autoignition Temperature: Not determined
Stability: Stable under normal laboratory conditions
Chemical Stability: Stable under standard laboratory conditions
Reactivity: May react with strong oxidizers; avoid acids
Hazardous Reactions: No polymerization; hazardous decomposition possible with strong acids or oxidizers
Hazardous Decomposition Products: Carbon oxides, sulfur oxides
Conditions to Avoid: Excessive heat, moisture, direct sunlight
Incompatible Materials: Strong oxidizing agents, concentrated mineral acids
Likely Routes of Exposure: Inhalation, ingestion, skin, or eye contact
Acute Toxicity: Low, not classified as toxic at tested concentrations
Skin Corrosion/Irritation: May cause mild irritation in sensitive individuals
Serious Eye Damage/Irritation: Mild irritation possible
Respiratory Sensitization: Dust may lead to coughing or mild irritation
Carcinogenicity: Not listed by IARC, OSHA, or NTP
Mutagenicity: No mutagenic effects observed in standard tests
Other Effects: Prolonged overexposure could cause discomfort but not likely to cause serious harm
Ecotoxicity: Not expected to be highly toxic to aquatic organisms, but large quantities can disrupt biological processes
Persistence and Degradability: Degrades over time in environment, especially with sunlight and biological activity
Bioaccumulative Potential: Low, does not strongly concentrate in biological tissues
Mobility in Soil: Will bind to soil particles; not expected to move quickly through soil
Other Adverse Effects: Minimize unnecessary release to prevent unnecessary loading of water systems
Product Disposal: Dispose of with regular laboratory waste in accordance with local, regional, and national regulations
Contaminated Packaging: Rinse thoroughly, dispose of as laboratory waste or recycle after cleaning
Precautions: Avoid discharge to environment, treat concentrated spills as hazardous
Regulatory Considerations: Follow hazardous waste guidelines as per local environmental agencies
UN Number: Not applicable
UN Proper Shipping Name: Not regulated as a dangerous good
Transport Hazard Class: Not applicable
Packing Group: Not assigned
Environmental Hazards: None identified for transport quantities
Special Precautions: Keep container tightly sealed and protected from damage during transit
OSHA Hazard Communication: Not classified as hazardous under OSHA standards
TSCA Inventory: Listed
REACH Registration: Substance registered in compliance with EU requirements
Other National Regulations: Meets requirements under Canadian DSL/NDSL, Australia's AICS, and other major chemical inventories
Safety, Health and Environmental Regulations: General chemical safety practices apply; follow lab safety protocols
Label Elements: Ensure containers are clearly labeled with substance identity and hazard warning information in accordance with local regulations
