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Mucic Acid: Safety and Awareness in the Lab and Beyond

Identification

Product Name: Mucic Acid
Chemical Formula: C6H10O8
Other Names: Galactaric acid
CAS Number: 526-99-8

Hazard Identification

Physical Hazards: Mucic acid sits as a white, odorless crystalline powder. It does not ignite easily or facilitate combustion, yet fine dust can form explosive mixtures with air.
Health Hazards: Dust irritates eyes, skin, and mucous membranes. Inhalation sometimes leads to coughing, sore throat. Chronic exposure rarely studied, but as with most powders, it's smart to avoid breathing the dust.
Environmental Hazards: Not reported as highly toxic to land or aquatic environments, though disposal into drains or water should always get a second thought.

Composition / Information on Ingredients

Chemical Name: Mucic Acid
Purity: Usually supplied at over 98% purity in reagent-grade forms. No common additives reported; check labels from trusted suppliers.

First Aid Measures

Eye Contact: Rinse with water for several minutes, lift eyelids occasionally. Call a physician if irritation or redness lingers.
Skin Contact: Wash with soap and water. Remove and wash any contaminated clothing before re-use.
Inhalation: Move to fresh air. Seek medical advice if coughing or symptoms stick around.
Ingestion: Rinse mouth, drink water if person is conscious. Medical attention helps if large amounts swallowed.

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam for fires involving mucic acid.
Special Hazards: Heating may release fumes like carbon oxides—good ventilation and prompt evacuation matter in big blazes.
Protective Equipment: Firefighters need self-contained breathing apparatus and protective clothing in large fires.

Accidental Release Measures

Spill Response: Sweep up gently, use damp cloths or shovels to reduce dust. Place in suitable containers for recovery or disposal.
Personal Precautions: Wear gloves, safety goggles, and dust masks. Avoid direct contact; keep unprotected people out of the area.
Environmental Precautions: Prevent entry into drains, sewers, or waterways. Mucic acid shouldn’t end up in water.

Handling and Storage

Handling: Handle in well-ventilated spots, keep containers shut tight between uses. Scoop or pour slowly to cut down on dust. Avoid eating, drinking, or smoking near work with powders.
Storage: Shelf in cool, dry locations, away from food, acids, and strong oxidizers. Label the container. Store at room temperature—avoid places where the powder could get wet or hot.

Exposure Controls and Personal Protection

Engineering Controls: Work in fume hoods or with local exhaust if dust generation risks run high.
Eye Protection: Safety goggles that fit snug matter for splash or dust risk.
Hand Protection: Disposable nitrile or latex gloves offer enough defense for most lab jobs with mucic acid.
Skin Protection: Lab coats, long pants, and closed shoes block unnecessary skin contact.
Respiratory Protection: Dust masks or NIOSH-approved respirators help where high dust floats in the air.

Physical and Chemical Properties

Appearance: White crystalline powder, no real odor.
Melting Point: Decomposes at about 210°C (410°F).
Solubility: Slightly soluble in cold water, more so in hot.
pH: Forms slightly acidic solutions with water.
Stability: Stable under normal, dry and cool conditions.

Stability and Reactivity

Chemical Stability: Mucic acid does not break down quickly. Stability holds at room temperature, away from strong acids, bases, or oxidizers.
Conditions to Avoid: Moisture, strong heating, rapid changes in temperature, direct sunlight.
Incompatible Materials: Strong oxidizing agents.
Hazardous Decomposition Products: Carbon dioxide and carbon monoxide can form if burned or decomposed at high temperatures.

Toxicological Information

Acute Toxicity: No extensive human data. Small animal research suggests very low acute toxicity.
Inhalation: Exposure leads to throat or nose irritation, coughing, maybe sneezing.
Skin/Eye Irritation: Powder in eyes or on skin stings and reddens—common sense urges washing off quickly.
Chronic Effects: Long-term effects rarely documented, no firm evidence links mucic acid with cancer, mutagenicity, or reproductive problems in humans.
Other Information: Safe handling and good hygiene curb nearly all suspected risks.

Ecological Information

Aquatic Toxicity: Not known to cause significant risk at lab or small industrial scales.
Biodegradation: Breaks down slowly in soil and water. Best not to treat drains or streams as trash cans—keep mucic acid secured from the environment.
Environmental Fate: No reports of dangerous buildup in animals or plants.

Disposal Considerations

Waste Disposal: Product and any material contaminated with mucic acid should go in sealed, labelled containers. Follow local regulations—give hazardous waste folks a call if in doubt.
Dirty Containers: Clear, label, and seal for proper pickup. Never reuse for food, drink, or other chemicals.

Transport Information

Shipping: Not classified as hazardous for land, sea, or air transport.
Packaging: Close containers tight. Use packing that prevents leaks or spills.

Regulatory Information

Workplace Safety: Not listed as a controlled substance under OSHA, TSCA, or European REACH.
Labelling: Good practice means clear hazard labels and smart storage.
Other Rules: Treat all unused chemicals with the respect they deserve, even mild ones like mucic acid. Annual safety reviews and updated training matter for anyone working around powders, especially in shared spaces.