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Material Safety Data Sheet (MSDS) – Sodium Dodecyl Sulfate (SDS)

Identification

Product Name: Sodium Dodecyl Sulfate (SDS)
Chemical Formula: C12H25SO4Na
Common Names: SDS, Sodium Lauryl Sulfate, Lauryl Sulfate Sodium Salt
CAS Number: 151-21-3
Recommended Use: Laboratory reagent, detergent, surfactant, cleaning product
Manufacturer Information: Contact number and address provided by supplier, check label for supplier-specific details

Hazard Identification

Classification: Eye irritation (Category 2); Skin irritation (Category 2); Acute aquatic toxicity (Category 3)
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes serious eye irritation, harmful to aquatic life
Pictograms: Exclamation mark, environmental hazard symbol
Precautionary Statements: Avoid breathing dust; wash after handling; use eye protection; avoid release to environment; wear protective gloves
Route of Exposure: Inhalation, skin, eyes, ingestion
Symptoms: Burning or stinging eyes, skin redness or dryness, cough, stomach upset

Composition / Information on Ingredients

Chemical Name: Sodium Dodecyl Sulfate
Synonyms: SDS, Sodium Lauryl Sulfate
Concentration: ≥ 99% (for laboratory grade)
Impurities: Typically present in trace amounts; consult supplier certification for more detail

First Aid Measures

Inhalation: Move to fresh air, seek medical help if symptoms persist
Eye Contact: Rinse with plenty of water for several minutes, remove contact lenses, seek medical advice for irritation
Skin Contact: Wash skin with soap and water, take off contaminated clothes, call for medical help if irritation continues
Ingestion: Rinse mouth, drink water if conscious, do not induce vomiting, get medical attention
Symptoms Requiring Immediate Care: Persistent eye pain, trouble breathing, severe rash or swelling

Fire-Fighting Measures

Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide
Unsuitable Extinguishing Media: Water jet may spread burning material
Hazardous Combustion Products: Sulfur oxides, carbon oxides, sodium oxides
Firefighting Procedures: Wear self-contained breathing apparatus, use protective clothing
Explosion Hazards: Dust may form explosive mixtures with air in confined spaces

Accidental Release Measures

Personal Protective Equipment: Gloves, protective goggles, dust mask or respirator
Spill Clean-Up: Sweep up and collect for disposal, avoid creating dust, ventilate area, wash spill site after pick-up
Environmental Precautions: Prevent product from entering drains, soil, or water bodies
Special Precautions: Avoid contact with skin, eyes, and clothing

Handling and Storage

Safe Handling: Handle in well-ventilated area, use appropriate personal protection, minimize dust creation
Precautions: Avoid contact with eyes, skin, and clothing; wash thoroughly after handling
Storage Requirements: Store in tightly closed container, keep in a cool, dry place away from incompatible substances
Incompatibles: Strong oxidizing agents, strong acids, bases

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established OSHA or ACGIH limits; minimize dust exposure
Engineering Controls: Use local exhaust ventilation or work in fume hood
Personal Protective Equipment: Chemical-resistant gloves, safety goggles or face shield, lab coat
Respiratory Protection: Dust mask or NIOSH-approved respirator for high concentration or poor ventilation
Hygiene Measures: Wash hands before eating, drinking, or smoking; avoid touching face while handling

Physical and Chemical Properties

Appearance: White powder or crystals
Odor: Mild detergent-like
Odor Threshold: Not available
pH (1% solution): 7–9
Melting Point: 204–207°C
Boiling Point: Not available (decomposes)
Flash Point: Not applicable
Solubility: Easily soluble in water, ethanol
Specific Gravity: 1.01–1.06
Vapor Pressure: Negligible
Partition Coefficient (n-octanol/water): No data

Stability and Reactivity

Chemical Stability: Stable under normal storage and handling conditions
Possibility of Hazardous Reactions: No dangerous reactions known under normal use
Conditions to Avoid: Heat, moisture, incompatible materials
Incompatible Materials: Strong oxidizing agents, acids, bases
Hazardous Decomposition Products: Sulfur oxides, sodium oxides, carbon oxides
Polymerization: Will not occur

Toxicological Information

Acute Toxicity: Oral LD50 (rat) 1288 mg/kg
Skin Irritation: Causes irritation; may cause dryness or cracking
Eye Irritation: Serious eye irritant, possible corneal damage
Inhalation: Dust may cause respiratory tract irritation
Chronic Exposure: Repeated skin contact may lead to dermatitis
Carcinogenicity: No components listed as carcinogen by NTP, IARC, OSHA
Sensitization: Not expected under normal usage

Ecological Information

Ecotoxicity: Harmful to aquatic organisms, may cause long-term effects in aquatic environments
Persistence & Degradability: Readily biodegradable under aerobic conditions
Bioaccumulative Potential: Low, not expected to accumulate in aquatic life
Mobility in Soil: High, can migrate in water-saturated soils
Other Adverse Effects: Avoid discharge to open waters or large quantities entering ecosystem

Disposal Considerations

Product Disposal: Dispose according to local, state, and federal regulations
Contaminated Packaging: Rinse thoroughly, then recycle or discard according to official guidelines
Special Precautions: Do not allow product to enter drains or watercourses
Waste Codes: Check local regulations for hazardous waste classification

Transport Information

UN Number: Not regulated for transport
UN Proper Shipping Name: Not assigned
Transport Hazard Class: Not regulated
Packing Group: Not classified
Marine Pollutant: Not listed
Special Precautions for Transport: Avoid packaging damage, prevent dust release during transport

Regulatory Information

TSCA Status: Listed on the US Toxic Substances Control Act inventory
EINECS/ELINCS Number: 205-788-1
DSL/NDSL Status: Listed
US SARA 311/312 Categories: Acute health hazard
California Prop 65: Not listed
Workplace Classification: Handle as hazardous substance in accordance with Internal Control (OSHA, WHMIS, GHS labeling recommendations)