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Substance: Hydroxypropyl-β-Cyclodextrin
Chemical Family: Cyclodextrin derivative
Molecular Formula: C42H70O35 (for cyclodextrin core)
Common Uses: Solubilizer for pharmaceuticals, food ingredient for flavor encapsulation, excipient in cosmetic formulations, stabilizer for sensitive compounds in lab research
Physical State: Fine white or off-white powder
Main Routes of Exposure: Inhalation of dust, skin or eye contact
Hazards: Dust can irritate respiratory tract and eyes after prolonged or repeated exposure
Combustion: May provide fuel for fire in large quantities, but no known acute hazards beyond general dust risks
Chronic Effects: No evidence in published studies suggests significant long-term toxicity at typical exposure levels encountered in laboratory, manufacturing, or clinical settings, though excessive dust inhalation can always trigger respiratory reactions
Main Ingredient: Hydroxypropyl-β-Cyclodextrin
Purity: Generally over 98% for pharmaceutical grade
Impurities: Minimal unreacted β-cyclodextrin or hydroxypropyl groups, water content varies with storage conditions
Eye Contact: Flush eyes gently with clean running water for several minutes; if irritation or redness persists, seek medical attention
Skin Contact: Wash area with soap and water to prevent dryness or irritation
Inhalation: Remove to fresh air, monitor for any persistent coughing or discomfort
Ingestion: Rinse mouth with water; unlikely to produce acute toxicity, but medical advice may be beneficial if large amounts are swallowed, especially for at-risk individuals
Suitable Extinguishing Media: Use water spray, dry powder, foam, or carbon dioxide extinguishers
Combustion Products: Combustion can emit carbon dioxide, carbon monoxide, and possibly traces of irritating organic vapors
Protective Equipment for Firefighters: Wear mask and full protective clothing to avoid exposure to smoke or dust
Spill Response: Immediately sweep or gently vacuum up material; avoid generating airborne dust
Environmental Precaution: Try to prevent entry into drains or surface waters though material has low ecological persistence; cleanup should focus on collecting and disposing according to local regulations
Personal Protection: Use dust masks or respirators, safety goggles, and gloves as needed for large spills or where repeated exposure is likely
Handling Practices: Keep containers tightly closed when not in use; avoid the creation of dust clouds by transferring slowly and using local exhaust ventilation where possible
Storage Conditions: Store in a dry, cool place away from strong oxidizers and sources of open flame; temperature and humidity control maintains purity and free-flowing nature
Ventilation: Work in areas with adequate air exchange; local extraction recommended during powder handling
Respiratory Protection: Dust masks generally suffice for occasional handling, but consider higher-level PPE in industrial setups
Eye/Face Protection: Safety glasses or splash goggles
Skin Protection: Standard lab gloves and coats to minimize direct contact and allergic reaction risk
Appearance: Fine, free-flowing powder, white to off-white
Odor: Faint, sweet
Melting Point: Decomposition occurs before defined melting point is reached
Solubility: Readily soluble in water, forming clear colloidal solutions; solubility depends on degree of substitution
Molecular Weight: Variable based on composition, typically around 1500–1600 g/mol for common grades
pH (aqueous, 1%): Neutral to slightly alkaline
Chemical Stability: Stable under usual storage and handling conditions; degrades slowly if exposed to strong acids or bases
Incompatibilities: Strong oxidizing agents can trigger breakdown, so keep away from peroxides or concentrated nitric acid
Hazardous Decomposition Products: Heating to decomposition yields carbon oxides and possibly small organic fragments
Oral Toxicity: Low; animal studies show high tolerability with minimal adverse effects
Skin and Eye Effects: Mildly irritating to sensitive individuals, but most people experience no reaction
Inhalation Risk: Dust particles can trigger respiratory tract discomfort if exposure is significant or prolonged
Mutagenicity/Teratogenicity: No evidence of carcinogenic or mutagenic potential from reputable scientific databases and long-term toxicology reviews
Aquatic Toxicity: Low impact expected given rapid biodegradation and breakdown in sewage or natural waters
Persistence and Degradability: Cyclodextrin derivatives break down into smaller glucose units; no major environmental build-up documented
Bioaccumulation: No known risk of bioaccumulation across aquatic species or food chains
Waste Disposal: Ordinary disposal through landfill or incineration where permitted, provided no contamination from hazardous substances
Container Cleaning: Rinse containers with water before recycling or disposal; avoid flushing large quantities down the drain to prevent local clogs or blockages
UN Number: Not classified as dangerous for transport
Hazard Class: Not regulated as a hazardous material by most international guidelines
Shipping Recommendations: Packed securely in closed, labeled containers to minimize dust exposure and accidental leaks during shipment
Status in the US and EU: Not classified as hazardous under GHS, OSHA or EU CLP for typical uses; pharmaceutical and food grades recognized as generally safe for intended applications
Workplace Recommendations: Maintain exposure well below occupational dust limits, observe standard hygiene, and train handlers on spill response best practices
