Chemical Name: 3,5-Dimethylbenzoic Acid
Chemical Formula: C9H10O2
CAS Number: 499-06-9
Synonyms: m-Xylene-2-carboxylic acid
Physical Form: White crystalline solid, characteristic odor
Common Uses: Intermediate for dyes, pharmaceuticals, organic synthesis
Finding the right identification parameters matters during raw material receipt, finished goods QA, and transfer to production lines. Mislabeling at this stage has led to costly recalls and stopped production, a hard lesson in our early years.
Hazard Classification: Irritant to eyes, skin, respiratory tract
Signal Word: Warning
Hazard Statements: May cause mild irritation on skin or eye contact; possible drowsiness or dizziness from sustained inhalation exposure
Health Risks: Short-term effects include coughing, redness; very high dust exposure over time could lead to more severe symptoms
Pictograms: Exclamation mark should be on all containers
Direct experience with dust during manual packing underlines why proper labeling and ongoing safety talks are staples in our plant routines. Untrained staff have suffered minor but avoidable incidents.
Substances: Pure 3,5-Dimethylbenzoic Acid, usually >98% by weight
Impurities: Trace to minor methylbenzoic acid isomers, negligible impact on risk
We rely on rigorous batch analysis for each lot. In one instance, unexpected impurity flagged by HPLC forced a full shutdown for investigation—costly, but ensured end-user and worker safety. Consistency starts with composition.
Inhalation: Move exposed individual to fresh air; monitor breathing
Skin Contact: Wash thoroughly with plenty of water and mild soap; remove contaminated clothing
Eye Contact: Rinse cautiously with water for at least 15 minutes; seek medical help if irritation persists
Ingestion: Rinse mouth, avoid induction of vomiting; seek medical attention if feeling unwell
Our operating teams train quarterly on these response steps. A team member accidentally got dust in their eye; quick execution of these measures prevented lasting harm, reinforcing why real-world drills always outshine paper protocols.
Suitable Extinguishing Media: Dry chemical, CO2, foam, water spray
Hazards from Combustion: Burning produces carbon oxides and irritating fumes
Special Protective Equipment: Self-contained breathing apparatus and chemical-resistant gear
Our facility’s fire history includes one incident where dust from faulty packing ignited in a confined space. Emergency response brought the right gear and kept casualties and losses at a minimum. We upgraded dust extraction immediately.
Spill Response: Isolate area for spill management; avoid raising dust; contain and collect material using vacuum equipped with HEPA filter or wet methods; shovel into inert containers for disposal
Personal Protection: Wear gloves, goggles, dust mask or respirator
A production spill proved that hasty sweeping only circulates dust and risk. Vacuuming with appropriate filters reduced secondary risk for on-shift workers and maintenance staff, protecting both teams while saving cleanup time.
Handling: Prevent dust generation with automated transfer where possible; implement local extraction at loading points; practice clean work habits
Storage: Store in tightly sealed containers, away from incompatible substances (strong oxidizers); control warehouse humidity and temperature
Bulk containers stored in damp, poorly ventilated space once led to caking and quality degradation. Improving climate control improved productivity and protected assets—lessons that drive our warehouse layout and standard practices today.
Engineering Controls: Install local exhaust at dust-generating points; use closed systems for large volumes
Personal Protective Equipment: Provide chemical-resistant gloves, safety goggles, lab coats or overalls, dust masks or respirators (P2 or similar, when dust exceeds threshold)
In daily production, reliance on PPE alone over engineering solutions has shown limited effectiveness. After air monitoring revealed frequent overexposure, we added improved LEV, reducing reliance on PPE and dropping complaints of nasal and skin irritation.
Appearance: White crystalline solid
Odor: Characteristic, faint aromatic
Melting Point: 108-110 °C
Boiling Point: 280-285 °C
Vapor Pressure: Low at room temperature
Solubility: Soluble in hot ethanol, acetone; slightly soluble in water
Flash Point: Estimated over 120 °C (closed cup)
Every shift change includes a review of nuisance dust, temperature, and humidity. Variations in appearance or melting point routinely flag batch inconsistencies—solving those has reduced customer complaints from downstream users.
Chemical Stability: Stable under normal storage and handling conditions
Incompatible Materials: Avoid strong oxidizing agents (can trigger uncontrolled reactions)
Hazardous Decomposition: Thermal decomposition produces carbon monoxide, carbon dioxide, possible traces of methylbenzoic volatiles
Production line interruptions have resulted from accidental mixing with strong oxidizers, underscoring the value of color-coded labeling and improved reaction sequence controls.
Acute Health Effects: Low toxicity via oral, dermal, inhalation routes; main symptoms include irritation, mild headaches with heavy exposure
Chronic Health Effects: No known sensitization, no evidence of mutagenic or carcinogenic potential from available studies
Near-miss exposure events have prompted us to foster a safety-first culture, regularly reviewing latest toxicology findings to stay ahead of regulatory and customer requirements.
Aquatic Toxicity: Low solubility and low acute toxicity expected in aquatic environments
Persistence and Degradability: Not readily biodegradable; possible long-term persistence in soil
Mobility in Soil: Limited due to hydrophobic character
Our experience aligning with stricter regional controls has made site spill prevention a company-wide priority. Secondary containment installations have demonstrated sharp declines in reportable releases, ultimately reducing scrutinization from environmental auditors.
Waste Disposal: Collect and send for off-site incineration where permitted; never introduce into surface water, sewer, or public landfill
Packaging Disposal: Triple-rinse containers before recycling or disposal
Historically, improper container decontamination led to regulatory warnings. Upgraded drum-washing programs helped stay compliant and minimized offsite environmental risks.
UN Number: Not classified as hazardous for land or sea transport
Shipping Name: 3,5-Dimethylbenzoic Acid
Packing Group: Not regulated as dangerous goods
Legislation may differ by country, but proactive labeling and documentation have eliminated routine delays at customs. Attention to detail in consignment paperwork smooths shipping and keeps relationships strong with logistics partners.
OSHA Status: Not specifically regulated
REACH/TSCA: Substance registered or listed for use; safety data regularly updated to match local and import regulations
Keeping regulatory affairs up-to-date is ongoing, not a checkbox. We maintain close tracking across regulatory frameworks—STP checks ensure our data sheets help our partners maintain compliance and avoid disruption due to audits or updated legal limits.
