{"L1_core": {"domain": "material", "category": "adhesive", "subcategory": "instant-adhesive", "abbreviation": "CA", "chemical_name": "cyanoacrylate"}, "L5_metadata": {"updated": "2026-01-04", "version": "1.0"}, "L3_standards": {"iso": ["ISO 15985"], "astm": ["ASTM D5363"]}, "L2_properties": {"physical": {"service_temp_c": [-30, 80], "full_cure_hours": 24, "cure_time_seconds": [5, 30]}, "mechanical": {"tensile_strength_mpa": [15, 25]}, "characteristics": ["instant-bonding", "moisture-cure", "high-strength", "brittle"]}, "L4_applications": ["precision-bonding", "electronics", "hobby-craft", "medical"]}