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Chemical Name: Gibberellic Acid
Synonyms: Gibberellin A3, GA3
Appearance: White to pale-yellow powder, occasionally granular or crystalline, recognized widely in agriculture for its plant growth regulator properties. Most of us in the field spot it quickly by texture and lack of distinct odor.
CAS Number: 77-06-5
Hazard Class: Not classified as a dangerous substance under normal use per GHS. Still, some folks handling it in bulk note sneezing, eye irritation, or dry skin, which tracks with dust exposure from most agricultural chemicals.
Pictograms: Generally not required, since it’s not a major health threat. Yet, you might encounter the exclamation mark where dust concentration gets out of hand.
Symptoms of Exposure: Eye redness, mild skin dryness or irritation, throat tickle on inhalation, rare allergic-type skin reactions.
Combustibility: Fine powders of most organic materials carry a combustible dust risk, so storing large quantities asks for good airflow and honest housekeeping to avoid buildup.
Active Ingredient: Gibberellic acid: typical technical grade over 90 percent pure. Some commercial products use much lower strengths, diluted with inert carriers.
Impurities: Water, trace salts, possible fermentation by-products if industrially sourced; rarely an issue for safety, but material purity affects crop performance.
Inhalation: Get to fresh air, cough out dust, sip water if your throat feels scratchy; see a physician for persistent irritation.
Skin Contact: Rinse with soap and water; skin usually returns to normal, unless someone has a rare reaction.
Eye Contact: Flush with running water; discomfort clears up, but farming folks keep an eyewash bottle handy for more stubborn stinging.
Ingestion: If accidentally swallowed in powder or tablet form, rinse mouth and drink water. Few acute effects expected at field rates, but consult a healthcare provider if discomfort lingers.
Extinguishing Media: Water spray, foam, dry chemical, or CO2, just like you’d use on most organic powders; avoid getting dust up into the air out of caution.
Hazards: Combustion can produce carbon oxides—a reminder that most powders need storage away from open flames.
Protective Equipment: Firefighters wear self-contained breathing apparatus in a real emergency; in small farm fires, a dust mask and gloves give some reassurance.
Personal Protection: Dust mask, gloves, and safety glasses recommended. Dust can irritate eyes or sinuses, especially in dry, windy conditions.
Spill Response: Sweep up without raising dust; for dampened spills, mop up and collect for disposal. It’s not as dramatic as pesticide spills, but a little care goes a long way.
Environmental Caution: Prevent runoff into drains and open water; excessive concentration impacts aquatic plant growth and may disrupt local habitats.
Handling: Avoid producing dust; don’t eat, drink, or smoke during use. Routinely washing hands after handling prevents unintentional exposure, especially in lunch areas.
Storage: Store in a dry, cool, well-ventilated area, away from feed, foodstuffs, and incompatible materials. Keep packaging tightly closed; moisture triggers clumping and loses product integrity.
Incompatibilities: Strong oxidizers may react; don’t store next to bleach, peroxides, or acids.
Exposure Limits: No occupational exposure limits established in most jurisdictions, but dust should be kept under control for general comfort.
Engineering Controls: Adequate local exhaust in enclosed spaces; open-air work rarely presents problems if wind isn’t high.
Personal Protective Equipment: Gloves, safety glasses, dust mask or respirator if dust gets heavy. Regular work clothes suffice in most applications for farmers and greenhouse staff.
Appearance: White to off-white powder or crystals; sometimes pressed tablets.
Odor: Nearly odorless; no strong chemical scent.
Solubility: Easily soluble in water (especially warm).
Melting Point: Decomposes before melting—a quirk a few lab techs have noticed.
pH: Slightly acidic in solution.
Other Properties: Stable under recommended storage; excessive moisture spoils it.
Chemical Stability: Stable under dry, normal conditions. Humidity ruins shelf life by caking it.
Hazardous Reactions: Avoid strong acids, bases, or oxidizers.
Decomposition Products: At high heat, expect carbon oxides; not a concern at practical use levels.
Acute Toxicity: Low toxicity reported for humans and animals at agricultural concentrations—handling larger quantities rarely causes more than slight eye or skin irritation.
Chronic Effects: No evidence of long-term health risks in existing studies.
Routes of Exposure: Inhalation of dust, skin or eye contact. Some greenhouse workers get occasional dermatitis if skin isn’t protected.
Sensitization: Uncommon.
Environmental Effects: Gibberellic acid is biodegradable and breaks down in soil and water. Uncontrolled release leads to elevated plant growth in aquatic environments, which disturbs balance and raises headaches for station managers near sensitive wetlands.
Aquatic Toxicity: Very low toxicity for most aquatic organisms, though indirect effects can occur by triggering algae or weed overgrowth.
Bioaccumulation: Negligible.
Disposal Methods: Scraps, unused powder, or slurry from tank cleaning belong in lined landfill or incineration facilities, as approved by local regulations. Mixing excess into compost or soil isn’t recommended at above-label concentrations.
UN Number: Not regulated for transport.
Hazard Class: Lacks classification as a hazardous cargo by road, rail, sea, or air. Most shipments move under routine agricultural supply chains.
Transport Precautions: Protect from moisture, rough handling, or punctured packaging, especially in long-haul or bulk scenarios.
Regulation: Approved for agricultural, horticultural, and research uses in most producing countries under pesticide or plant regulator schedules; oversight comes from agencies like EPA, EFSA, and others. Maximum residue levels set for treated crops vary by region.
Worker Safety: Labor standards call for gloves, eyewear, and dust control in handling areas.
Environmental Requirements: Most jurisdictions ask for responsible disposal, buffer zones, and application timing to minimize non-target exposure during sensitive periods for wildlife or water bodies.
