Sikaflex® 1c SL Limestone 10oz

 Basic Identification Attributes

• Chemical Name (IUPAC): Polyurethane prepolymer (moisture-curing)

• Common/Trade Name: Sikaflex® 1c SL Limestone

• CAS Number: Mixture (proprietary formulation)

• HS Code: 3214.10 (Sealants and mastics)

• Synonyms: Self-leveling polyurethane sealant, Sikaflex SL

Physical & Chemical Properties

• Physical State: Paste (in cartridge form)

• Color & Odor: Limestone (off-white/beige); slight polyurethane odor

• Cure Mechanism: Moisture-cured

• Movement Capability: ±25% (ASTM C920)

• Shore A Hardness: ~35

• Application Temperature: +5°C to +35°C (41°F to 95°F)

• Tack-Free Time: ~3–5 hours

• Full Cure: 3–7 days depending on conditions

• Solids Content: 100% (no shrinkage)

Safety & Hazard Attributes

• GHS Classification: Skin and eye irritant; contains isocyanates

• Toxicity: Moderate; safe when cured but may cause sensitization during application

• Exposure Limits: Avoid breathing vapors; consult SDS for isocyanate limits

Storage & Handling Attributes

• Storage Conditions: Store in original sealed container in a dry place between +5°C and +25°C

• Container Type: 10oz (300 mL) cartridge; also available in sausages and bulk pails

• Shelf Life: 12 months from date of manufacture

• Handling Precautions: Use gloves, eye protection; ensure proper ventilation during application

Regulatory & Compliance Attributes

• Complies with ASTM C920 Type S, Grade P, Class 25, Use T, M, G, A, O

• VOC-compliant with SCAQMD Rule 1168 and LEED v4 criteria

• ISO 9001-certified manufacturing process

• Meets USDA regulations for use in food processing and handling facilities (non-food contact)

• REACH and RoHS compliant

Environmental & Health Impact

• Biodegradability: Not readily biodegradable; inert after curing

• Ecotoxicity: Low in cured form; avoid release of uncured product into environment

• Bioaccumulation: Not expected

Environmental Benefit: Long service life reduces need for frequent replacements