Grade: ULTRA PURE CAS Number: 1185-53-1 Synonym(s): Tris HCl, 2-Amino-2-hydroxymethyl-1 3-propanediol hydrochloride,Tris(hydroxymethyl) aminomethane hydrochloride Molecular Weight: 157.64 Molecular Formula: C4H11NO3.HCl Storage Condition: Room temperature Specification Result Appearance White crystalline Infrafed Pass Purity (By Titration 0.1N NaOH/Dried basis) 99.7% Melt point 150.2-152.8°C Water Content (By Karl Fischer) 0.35% Loss on drying 0.12% pH (1.0% aqueous ) 4.8 Ultraviolet Absorbance (1.0M aqueous) A(260 nm): 0.022A(280 nm): 0.020 Solubility (1.0M aqueous) Clear, colorless solution Heavy metal ≤5ppm Fe ≤5ppm RNase (P/F) None DNase (P/F) None Safety Data Sheet MSDS

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Grade: ULTRA PURE CAS Number: 1185-53-1 Synonym(s): Tris HCl, 2-Amino-2-hydroxymethyl-1 3-propanediol hydrochloride,Tris(hydroxymethyl) aminomethane hydrochloride Molecular Weight: 157.64 Molecular Formula: C4H11NO3.HCl Storage Condition: Room temperature Specification Result Appearance White crystalline Infrared Pass Purity (By Titration 0.1N NaOH/Dried basis) 99.7% Melt point 150.2-152.8°C Water Content (By Karl Fischer) 0.35% Loss on drying 0.12% pH (1.0% aqueous ) 4.8 Ultraviolet Absorbance (1.0M aqueous) A(260 nm): 0.022A(280 nm): 0.020 Solubility (1.0M aqueous) Clear, colorless solution Heavy metal ≤5ppm Fe ≤5ppm RNase (P/F) None DNase (P/F) None Safety Data Sheet MSDS

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Grade: ULTRA PURE CAS Number: 1185-53-1 Synonym(s): Tris HCl, 2-Amino-2-hydroxymethyl-1 3-propanediol hydrochloride,Tris(hydroxymethyl) aminomethane hydrochloride Molecular Weight: 157.64 Molecular Formula: C4H11NO3.HCl Storage Condition: Room temperature Specification Result Appearance White crystalline Infra-red Pass Purity (By Titration 0.1N NaOH/Dried basis) 99.7% Melt point 150.2-152.8°C Water Content (By Karl Fischer) 0.35% Loss on drying 0.12% pH (1.0% aqueous ) 4.8 Ultraviolet Absorbance (1.0M aqueous) A(260 nm): 0.022A(280 nm): 0.020 Solubility (1.0M aqueous) Clear, colorless solution Heavy metal ≤5ppm Fe ≤5ppm RNase (P/F) None DNase (P/F) None Safety Data Sheet MSDS

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