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112186 1,1,1,3,3,3-Hexamethyldisilazane

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Key Specifications Table

CAS #EC NumberHill FormulaMolar Mass
999-97-3213-668-5C₆H₁₉N Si₂133.49 g/mol

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      Glass bottle 100 ml
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      Catalogue Number112186
      SynonymsBis(trimethylsilyl)amine, HMDS
      Product Information
      CAS number999-97-3
      EC number213-668-5
      Hill FormulaC₆H₁₉N Si₂
      Molar Mass133.49 g/mol
      HS Code2931 90 00
      Structure formula ImageStructure formula Image
      Quality LevelMQ100
      Application1,1,1,3,3,3-Hexamethyldisilazane for gas chromatography. CAS 999-97-3, molar mass 161.39 g/mol.
      Biological Information
      Physicochemical Information
      Boiling point126 °C (1013 mbar)
      Density0.77 g/cm3 (20 °C)
      Explosion limit0.8 - 25.9 %(V)
      Flash point11.4 °C
      Ignition temperature325 °C
      Melting Point-82 °C
      pH value>7.0 (H₂O)
      Vapor pressure1900 Pa (20 °C)
      Viscosity kinematic0.9 mm2/s (25 °C)
      Materials Information
      Toxicological Information
      LD 50 oralLD50 Rat 847 mg/kg
      LD 50 dermalLD50 Rabbit 550 mg/kg
      Safety Information according to GHS
      Hazard Pictogram(s) Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Statement(s)H225: Highly flammable liquid and vapour.
      H302: Harmful if swallowed.
      H311 + H331: Toxic in contact with skin or if inhaled.
      H314: Causes severe skin burns and eye damage.
      Precautionary Statement(s)P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
      P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
      P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
      P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
      P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
      P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
      P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
      P403 + P235: Store in a well-ventilated place. Keep cool.
      Signal WordDanger
      Storage class3 Flammable liquids
      WGKWGK 2 obviously hazardous to water
      Safety Information
      Categories of dangerhighly flammable, harmful, corrosive
      Product Usage Statements
      Storage and Shipping Information
      StorageStore below +30°C.
      Packaging Information
      Transport Information
      Declaration (railroad and road) ADR, RIDUN 3286 , 3 (6.1, 8), II
      Declaration (transport by air) IATA-DGRUN 3286 , 3 (6.1, 8), II
      Declaration (transport by sea) IMDG-CodeUN 3286 , 3 (6.1, 8), II, Segregation Group: 1 (Acids)
      Supplemental Information
      Appearance of substance (colour)colourless
      Assay (GC, area%)≥ 98.5 % (a/a)
      Identity (IR)passes test


      1,1,1,3,3,3-Hexamethyldisilazane SDS


      Safety Data Sheet (SDS) 

      1,1,1,3,3,3-Hexamethyldisilazane Certificates of Analysis

      Product Number PackagingSpecificationLot Number
      1121860100 Glass bottlePDF Specification Document