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Product Name: Prohexadione Calcium
Chemical Formula: C10H7CaO5
SYNONYMS: Calcium 3-oxido-5-oxo-4-propionylcyclohex-3-ene-1-carboxylate
Manufacturer: Contact chemical supplier directly for details
Use: Plant growth regulator, most often applied on pome and rice crops
Contact Information: Emergency phone lines for chemical companies or local poison control
Classification: Eye irritation Category 2B, Specific target organ toxicity (single exposure) Category 3
Signal Word: Warning
Hazard Statements: Causes eye irritation, may cause respiratory irritation, may cause skin sensitivity or allergic reactions in some workers
Pictogram: Exclamation mark
Other Hazards: Dust can cause mechanical eye and respiratory irritation, prolonged contact possibly triggering allergic reactions
Active Ingredient: Prohexadione Calcium
CAS Number: 127277-53-6
Concentration: Typically 90%-98% technical grade, rest inert carriers if formulated
Other Ingredients: Water, kaolin, surfactants (for formulated products), proprietary binders according to specific product
Inhalation: Move into fresh air, loosen tight clothing, seek medical advice if symptoms persist
Skin Contact: Remove contaminated clothing, wash thoroughly with soap and water
Eye Contact: Rinse immediately with plenty of water for 15 minutes, remove contact lenses if present, consult doctor
Ingestion: Rinse mouth, never give anything by mouth to unconscious person, seek medical attention promptly
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Media: High-pressure water streams may spread material
Special Hazards: Emits toxic fumes such as carbon oxides and calcium oxide during combustion
Protective Equipment: Self-contained breathing apparatus and full protective gear required for fire-fighting personnel
Advice: Use caution as containers exposed to fire may explode due to pressure build-up
Personal Precautions: Avoid contact with skin and eyes, prevent inhalation of dust
Protective Equipment: Wear chemical resistant gloves, goggles, approved respirator for dust
Environmental Precautions: Prevent further leakage, do not allow into watercourses, sewers or drains
Methods for Cleanup: Use mechanical means to collect material (shovel or vacuum), avoid creating dust, place in appropriate containers for disposal, clean surface thoroughly afterward
Handling: Avoid prolonged contact with skin and eyes, minimize dust generation, use proper ventilation, do not eat, drink, or smoke in work areas
Storage: Keep in original container, tightly sealed in cool, dry, well-ventilated location, guard against moisture
Incompatibilities: Avoid strong oxidizers, acids, moisture as these may degrade product or form harmful by-products
Engineering Controls: Local exhaust ventilation or other measures to control airborne dust
Eye Protection: Safety goggles or face shield
Hand Protection: Chemical-resistant gloves such as nitrile or neoprene
Skin Protection: Long-sleeved clothing, lab coat or coveralls
Respiratory Protection: NIOSH/MSHA approved respirators during excessive dust production
Occupational Exposure Limit: Not formally established for prohexadione calcium; treat as nuisance dust
Appearance: Off-white to beige powder
Odor: Odorless
pH: 7.0–8.0 (1% solution in water)
Melting Point: Decomposes above 250°C
Boiling Point: Not applicable
Flash Point: Not flammable
Solubility: Sparingly soluble in water, insoluble in most organic solvents
Vapor Pressure: Negligible at room temperature
Bulk Density: Approx. 0.45–0.60 g/cm3
Stability: Stable under recommended storage and handling conditions
Thermal Decomposition: Emits calcium oxide and carbon oxides
Reactivity: No dangerous reaction known under normal conditions
Incompatible Materials: Strong acids and oxidizing agents
Hazardous Polymerization: Will not occur
Conditions to Avoid: Excessive heat, moisture, contact with strong acids
Acute Toxicity: Oral LD50 (rat): >5,000 mg/kg, considered low toxicity
Skin Corrosion/Irritation: Slightly irritating to skin, not a sensitizer in most animal studies
Serious Eye Damage/Irritation: Moderate eye irritation observed in laboratory tests
Respiratory or Skin Sensitization: Respirable dust may cause mild irritation
Chronic Effects: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity based on standard data
Other:** Persons with pre-existing respiratory or allergic conditions may have increased sensitivity
Eco-Toxicity: Practically non-toxic to fish, aquatic invertebrates, birds and bees at normal application rates
Mobility: Slightly mobile in soil, binds to organic matter reducing leaching
Persistence and Degradability: Degrades in soil via microbial activity, moderate degradation rate
Bioaccumulation Potential: Does not bioaccumulate significantly in organisms
Other Adverse Effects: Unlikely to disrupt water or soil ecosystems if used as directed
Waste Treatment Methods: Dispose of according to local, state, federal regulations, do not empty into drains or watercourses
Product Disposal: Use approved landfill or incineration facilities, triple rinse containers before recycling or disposal
Packaging Disposal: Follow label instructions, avoid reuse of empty containers, manage as hazardous waste if contaminated
UN Number: Not regulated by ADR/RID, IMDG, IATA
UN Proper Shipping Name: Not classified as a dangerous good
Transport Hazard Class: N/A
Packing Group: N/A
Special Precautions: Store upright during transport, avoid physical damage to containers, keep separated from incompatible cargo such as acids and oxidizers
Labelling Requirements: Classified and labeled according to GHS,
TSCA Status: Listed or exempt in most regulatory inventories
FIFRA Status: Registered as a pesticide under EPA for certain uses
Other Regulations: Subject to worker protection standards for agricultural chemicals, follow country-specific pesticide legislation for transport, usage and disposal
