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Chemical Name: 1,3,5-Benzenetricarboxylic Acid
Common Names: Trimesic Acid
Appearance: White crystalline powder
Molecular Formula: C9H6O6
Molecular Weight: 210.15 g/mol
Odor: Essentially odorless
CAS Number: 554-95-0
GHS Classification: Not classified as a hazardous substance according to GHS criteria under typical handling conditions.
Main Hazards: Dust from solid form can irritate eyes, respiratory tract, and skin. Inhalation may bring discomfort to those with sensitive lungs.
Label Elements: No pictogram assigned.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion by accident.
Potential Health Effects: Chronic exposure not well-documented in everyday environments, but even nontoxic solids like this can aggravate pre-existing allergies or sensitivities upon repeated contact.
Chemical Identity: 1,3,5-Benzenetricarboxylic Acid, pure form
Concentration: 100% if no dilution, with minimal likelihood of commercial impurities
Synonyms: Trimesic Acid
Important Impurities: None expected in reagent-grade material.
Inhalation: Remove to fresh air. If irritation lingers, individual should seek medical evaluation.
Skin Contact: Remove contaminated clothes; wash skin with soap and water. For persistent symptoms, pursue medical attention.
Eye Contact: Rinse eyes with water for several minutes, holding eyelids open. Seek medical advice for discomfort that won’t ease.
Ingestion: Rinse mouth and drink water to dilute. If large quantities swallowed or symptoms show up, consult a healthcare provider promptly.
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam for surrounding fire.
Hazards from Combustion: Combustion or thermal decomposition can release irritating or toxic fumes such as carbon monoxide and carbon dioxide.
Protective Equipment: Firefighters need full respiratory protection in closed spaces.
Other Notes: This chemical doesn’t burn easily, but fire in the area makes it safer to prevent dust build-up.
Personal Precautions: Avoid dust formation, ventilate the area, wear proper gloves, and protect eyes.
Spill Control: Sweep or vacuum up spills without raising dust. Use tools that don’t create sparks.
Environmental Precautions: Avoid allowing spill to enter drains or watercourses.
Cleanup: Collect in secure container for disposal according to local guidelines.
Handling: Use in a well-ventilated space. Minimize dust generation. Wash hands thoroughly after use.
Storage: Keep container tightly sealed. Store in a dry place away from incompatible substances like strong bases or oxidizers.
Incompatibilities: Keep away from strong alkali or oxidizing agents to avoid unwanted reactions.
Engineering Controls: Work in a chemical fume hood or area with local exhaust if possible.
Personal Protection: Wear chemical safety goggles or glasses, lab coat, and gloves suitable for general laboratory chemicals.
Respiratory Protection: Disposable dust mask if dusting, especially in confined areas.
Exposure Limits: No occupational exposure limits set for this acid specifically, so general nuisance dust levels apply.
Appearance: White powder or crystalline solid
Odor: Essentially odorless
Boiling Point: Decomposes before boiling
Melting Point: Around 350°C (decomposes)
Solubility: Slightly soluble in water, more so in hot water, moderate solubility in ethanol or acetone
pH: Acidic in solution
Density: About 1.7 g/cm³
Stability: Stable in cool, dry, and well-sealed containers over the long term.
Hazardous Reactions: May react with strong bases to form salts; reacts vigorously with oxidizing agents.
Decomposition Products: Produces carbon oxides if heated strongly
Conditions to Avoid: Moisture, strong heat, exposure to incompatible materials.
Acute Toxicity: Low oral toxicity; single exposures through swallowing not expected to cause systemic harm
Skin Irritation: May cause slight irritation upon prolonged or repeated contact
Eye Irritation: Possible mild irritation from dust or accidental contact
Chronic Effects: Long-term effects not well described in major literature, reflecting its relatively benign chemical nature
Sensitization: No information pointing to allergic responses in normal handling.
Aquatic Toxicity: Not expected to exhibit significant acute toxic effects at environmentally relevant concentrations
Persistence and Degradability: Tends to break down slowly in the environment, particularly with microbial action
Bioaccumulation: Expected to have low potential for bioaccumulation in aquatic systems
Mobility: Not highly mobile due to low water solubility.
Waste Disposal: Collect waste in a sealed, labeled container. Local laws determine details, but non-hazardous laboratory chemicals like trimesic acid often go with non-reactive organic solid waste.
Do Not: Pour down the drain, dump in the environment, or incinerate with household waste.
Contaminated Packaging: Clean containers thoroughly or dispose of via an approved chemical waste handler.
UN Number: Not regulated for transport as a dangerous good
Proper Shipping Name: Not assigned for this compound
Regulatory Transport Class: Not defined in global dangerous goods lists.
Handling During Transport: Use secure, sealed containers and avoid moisture or severe physical shocks.
Regulatory Status: Not listed as a controlled or highly regulated substance in major chemical inventories.
Occupational Classification: Treated as a general laboratory or specialty chemical, subject to routine occupational health and safety rules
Warning Labels: Standard labels encourage avoidance of dust inhalation and direct physical contact.
SDS Requirements: Businesses and schools using trimesic acid should still keep up-to-date safety information and offer employee training on correct usage.
