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Product Name: Active Dry Yeast
Common Use: Baking, fermentation processes, beverage production
Manufacturer: Manufacturer name, address, and emergency contact information
Chemical Family: Yeast, Saccharomyces cerevisiae
Product Code: Typically printed on packaging or shipping documents
Contact for Technical Information: Phone number and website of manufacturer
Recommended Usage: Follow food industry and laboratory protocols for yeast application
Synonyms: Baker's yeast, Bread yeast
Signal Word: Not classified as hazardous according to OSHA criteria
Physical Hazards: Not flammable in original dry form; dust may pose risk of explosion when suspended in air
Health Hazards: Not considered toxic; inhaling dust may cause irritation to respiratory tract, especially for people with pre-existing sensitivities
Environmental Hazards: Large-scale release into water may cause oxygen depletion
Label Elements: No pictogram or hazard statement under GHS classification, general caution for dust exposure
Precautionary Statements: Avoid breathing dust, use in well-ventilated areas, wash skin thoroughly after handling
Emergency Overview: Non-hazardous solid, potential for respiratory irritation from airborne dust
Ingredient: Active dried yeast cells (Saccharomyces cerevisiae)
Concentration: 95-100% by weight
Additives/Impurities: Small percentages of emulsifiers (sorbitan monostearate) or rehydration agents in some brands
CAS Number: 68876-77-7 (for active yeast)
Allergenic Components: No known major allergens, but sensitive individuals can react to yeast proteins
Inhalation: Remove person to fresh air; seek medical attention if symptoms persist. Nasal and throat discomfort usually resolves with clean air.
Skin Contact: Wash with soap and plenty of water; irritation rarely occurs. Seek medical help if skin irritation continues
Eye Contact: Rinse with running water for several minutes. Remove contact lenses if easy to do so. Medical attention if discomfort lasts
Ingestion: Not considered toxic; rinse mouth and drink water if large amounts swallowed. Seek help for allergic reactions
Most important symptoms: Irritation of airways, minor skin itching, and eye discomfort in sensitive individuals. Allergic reactions rare, but possible.
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Extinguishing Media: None known for yeast in dry powder form
Special Hazards: Fine airborne dust can ignite or explode if exposed to open flames or sparks.
Special Protective Equipment: Standard fire-fighter protection and self-contained breathing apparatus for large fires
Fire/Explosion Hazards: Prevent dust build-up in enclosed areas; dust may form explosive mixture in air under certain conditions
Decomposition Products: Releases carbon dioxide and other non-toxic gases. No hazardous gases reported during combustion.
Personal Precautions: Avoid creating dust. Use personal protective equipment such as dust masks and gloves
Environmental Precautions: Avoid release to water courses; large quantities can deplete oxygen levels in water
Cleanup Methods: Sweep up spilled material carefully to prevent dust formation. Use vacuum system with proper filtration for large spills
Waste Disposal: Dispose in appropriate landfill or composting facility according to local regulations
Additional Measures: Ventilate area before starting cleanup. Prevent mixing released yeast with incompatible substances.
Precautions for Safe Handling: Minimize dust formation, avoid inhalation, use local exhaust in operations generating dust. Practice good hygiene after handling.
Storage Conditions: Store in a cool, dry, and well-ventilated place. Keep container tightly closed to prevent moisture absorption
Incompatibilities: Strong acids or strong oxidizers may react with yeast. Avoid exposure to direct sunlight or high humidity; reduces product quality
Special Handling: Apply FIFO (first-in, first-out) for freshness. Label containers clearly. Limit storage duration to manufacturer’s recommendations.
Engineering Controls: Provide ventilation or local exhaust to limit dust concentrations in air
Respiratory Protection: Dust mask (N95 or equivalent) for prolonged exposure in dusty conditions
Skin Protection: Protective gloves recommended for those with sensitivities. Regular hand washing after use
Eye Protection: Safety glasses or goggles when handling large amounts or where dust is present
Occupational Exposure Limits: No established limits for yeast; control exposure to airborne particulates as per local regulations
General Hygiene: Always wash hands after handling. No food, drink, or smoking in processing areas.
Appearance: Tan to light brown, granular or powder form
Odor: Mild, bready, yeasty smell
pH (1% slurry): Approximately 6.5 - 7.5
Boiling Point: Not applicable, decomposes before boiling
Melting Point: Not applicable, thermal decomposition occurs
Flash Point: Not flammable in bulk form, dust hazard exists
Vapor Pressure: Not applicable
Solubility: Partially soluble in water, forms a suspension
Bulk Density: About 0.5 - 0.7 g/cm³
Particle Size: Ranges from fine powder to small granules
Explosive Properties: Fine dust may become explosive at high concentrations in air.
Chemical Stability: Stable under recommended storage conditions
Reactivity: Non-reactive under normal conditions; reacts with strong acids and oxidizers
Conditions to Avoid: Excessive heat, humidity, and contamination with incompatible chemicals
Hazardous Decomposition: May produce carbon dioxide and organic compounds in case of strong thermal decomposition
Polymerization: Does not occur
Incompatible Materials: Strong oxidizers, acid chlorides, and direct flames may alter product or degrade yeast quality.
Acute Toxicity: Not toxic by oral, inhalation, or dermal routes in typical food uses
Chronic Toxicity: No evidence for carcinogenic or mutagenic effects for Saccharomyces cerevisiae
Irritation: Dust may temporarily irritate eyes, skin, and respiratory tract
Sensitization: Rare cases of allergic reactions, mostly in sensitive individuals or those exposed occupationally
LD50 (oral, rat): Greater than 10,000 mg/kg
Symptoms: Mild cough, sneezing, itchy eyes, mild skin irritation
Medical Conditions Aggravated by Exposure: Asthma, chronic respiratory illness, severe yeast allergies.
Ecotoxicity: Low toxicity for aquatic and terrestrial environments at retail and industrial quantities
Persistence and Degradability: Biodegradable, breaks down rapidly in soil and water
Bioaccumulation Potential: No significant bioaccumulation observed
Mobility in Soil: Limited, attaches to soil particles and degrades naturally
Other Adverse Effects: Large-scale spills in water can reduce oxygen levels, affecting aquatic life. No lasting ecological harm expected at normal volumes.
Disposal Methods: Composting or disposal as biodegradable waste is preferred. Landfill disposal should follow local regulations
Container Disposal: Rinse and recycle packaging where possible, or dispose as general waste
Environmental Precautions: Avoid bulk disposal in water bodies; large quantities may upset natural microbial balance
Additional Information: No special disposal method needed at consumer scale.
UN Number: Not regulated
Transport Hazard Class: Not classified as dangerous goods
Packing Group: Not applicable
Label Requirements: No special hazard label needed
Shipping Name: Active Dry Yeast
Special Precautions: Protect from excessive moisture, physical damage, and direct sunlight during transport.
OSHA: Not regulated as hazardous under OSHA standards
GHS Classification: Not classified
TSCA Inventory: Listed
Food Additive Status: Approved for food use by FDA and many international health authorities
WHMIS Classification (Canada): Not considered controlled
Other Regulations: Compliance with national and international standards for handling, labeling, and food-grade transport applies. Reporting not required for typical quantities.
