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Name: Trypsin
Source: Extracted from porcine pancreas
Common forms: Powder, crystalline solid, or lyophilized preparation
Common uses: Cell dissociation in labs, digestion of proteins, enzymatic analysis
Key identifiers: CAS number 9002-07-7; Enzyme Commission number EC 3.4.21.4
Odor: Slightly sweet, often non-obvious; may linger on equipment after use
Color: White or off-white; exposure to air sometimes causes yellowing
GHS classification: Respiratory sensitizer, possible skin and eye irritant
Pictogram: Exclamation mark under GHS
Hazard statements: Causes allergic reactions with repeated exposure, irritates eyes and skin, inhalation can trigger respiratory symptoms
Precautionary statements: Avoid breathing dust, wash thoroughly after handling, use in ventilated areas
Emergency overview: Fine dust may cloud workspace air, increasing inhalation risk; contact with eyes, mouth, or mucous membranes can be problematic
Main ingredient: Trypsin enzyme, activity typically >1000 units/mg
Purity: Variable; often accompanied by low levels of chymotrypsin and other proteases
Formulation: Some commercial samples blended with buffers or stabilizers like calcium ions; not always disclosed
Origin note: Derived from animal tissue—an allergy risk for some individuals
Eye contact: Rinse with water for at least 15 minutes; seek help if irritation lingers
Skin contact: Remove contaminated clothing, wash thoroughly with soap and water
Inhalation: Move to fresh air, let breathing recover; go to a clinic if symptoms start
Ingestion: Rinse mouth, drink water, avoid inducing vomiting; medical advice helps rule out reaction
Key point: Delayed allergic reactions possible—monitor for swelling or breathing changes
Suitable extinguishing media: Water spray, dry chemical, CO2, or foam
Special hazards: Burning can release small amounts of irritating or hazardous decomposition fumes
Protective equipment: Full protective gear plus self-contained breathing apparatus for big fires
Combustion byproducts: May generate nitrogen oxides, carbon oxides
Prevention insight: Store away from heat sources or open flames; keep dust away from ignition
Personal precautions: Avoid contact with skin and eyes; don N95 mask or better, gloves, goggles
Environmental precautions: Prevent powder from going down drains or into water sources
Cleanup: Sweep or vacuum carefully (HEPA filter preferred), moisten powder if practical to prevent airborne dust; wipe area with damp cloth
Waste handling: Collect spills in sealed container for hazardous waste disposal
Safe handling: Work in biosafety cabinet or fume hood, minimize dust cloud; avoid generating aerosols; keep containers closed unless in use
Storage conditions: Store sealed and dry at 2–8°C; protect from heat, humidity, and sunlight
Incompatibilities: Strong acids, alkalis, oxidizers destroy enzyme function and might spark unwanted reactions
Key reminder: Label containers clearly and segregate from incompatible substances
Engineering controls: Biosafety cabinet or local exhaust ventilation limits airborne dust
Respiratory protection: N95 respirators or particle masks if aerosol generation possible
Skin protection: Lab gloves, long sleeves, lab coat
Eye/face protection: Safety goggles or face shield for powder manipulation
Hygiene: Wash hands and face after work; don’t eat, drink, or smoke in the area; clean work surfaces often
Appearance: Fine white or off-white powder
Odor: Faint, sometimes none
pH (solution): Neutral to mildly basic; active between 7.0 and 9.0
Solubility: Freely soluble in water, insoluble in organic solvents
Melting point: Decomposes before melting
Stability: Dry powder handles short room temperature exposure; solution form loses activity outside the fridge
Other properties: Generates irritating dust when disturbed; lacks strong color or distinctive smell that might warn users of clouds
Chemical stability: Stable below 8°C, rapidly inactivates above 40°C or in acid
Reactivity: Reacts with acids, bases, oxidizers, and reducing agents; loses protein-digesting action if mis-handled
Decomposition products: Burning or improper storage may release ammonia, nitrogen oxides, and carbon oxides
Incompatibilities: Avoid acids, alkalis, and anything with a strong oxidizing potential
Acute effects: Respiratory irritation, allergy or asthma triggered by inhalation; skin or eye irritation after direct contact
Chronic effects: Persistent exposure mostly brings risks of allergic sensitization, occasional eczema or respiratory symptoms
Ingestion: Limited systemic absorption—trouble usually comes from mouth and throat irritation, rare nausea
Carcinogenicity: No evidence for carcinogenic, reproductive, or genetic toxicity related to trypsin
Medical advice: Staff with enzyme allergies should avoid handling to cut risk of asthma or dermatitis
Aquatic toxicity: High concentrations may harm aquatic life due to enzyme activity
Degradability: Rapidly breaks down in the environment, but bulk spills might disrupt ecosystems
Bioaccumulation: No evidence for significant accumulation
Precaution note: Keep out of waterways; treat enzymatic waste as hazardous until neutralized
Waste handling: Place solid and solution waste in sealed chemical waste containers
Deactivation: Heat to 80°C, treat with acid or alkali to denature before drain disposal—but only with regulatory approval
Regulatory advice: Manage any item contaminated by trypsin as laboratory biological waste
Local laws: Labs must consult hazardous waste programs before dumping any leftovers down the drain
UN number: Not classified as dangerous goods for road, air, or sea transport
Packaging: Use tightly sealed, labeled containers
Hazards in transit: Avoid moisture or direct sunlight, protect from impact
Spill risk: Fine dust disperses easily; packaging integrity matters for bulk transport
Chemical labels: Follows GHS hazard communication standards—ensure hazard pictogram and warning
Notification: Countries may flag trypsin as an occupational respiratory risk
Workplace measures: Regulations stress dust control—ventilation, personal protection, spill training
Allergens: Some occupational safety programs treat enzymes as respiratory allergens subject to monitoring and limitation
