Product Information CAS number 128-37-0 EC number 204-881-4 Grade Ph Eur,JPE,NF,E 321 Hill Formula C₁₅H₂₄O Molar Mass 220.35 g/mol HS Code 2907 19 90 Structure formula Image Applications Application Butylhydroxytoluene Ph Eur,JPE,NF,E 321. CAS 128-37-0, molar mass 220.35 g/mol. Physicochemical Information Boiling point 265 °C (1013 hPa) Density 1.05 g/cm3 (20 °C) Flash point 127 °C Ignition temperature 345 °C Melting Point 69 - 70 °C Vapor pressure 0.02 hPa (20 °C) Bulk density 450 kg/m3 Solubility <0.001 g/l Toxicological Information LD 50 oral LD50 Rat > 2000 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H410: Very toxic to aquatic life with long lasting effects. Precautionary Statement(s) P273: Avoid release to the environment. RTECS GO7875000 Storage class 10 - 13 Other liquids and solids WGK WGK 2 water endangering Safety Information Hazard Symbols Dangerous for the environment Categories of danger dangerous for the environment R Phrase R 50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. S Phrase S 61 Avoid release to the environment. Refer to special instructions/ Safety data sheets. Storage and Shipping Information Storage Store at +15°C to +25°C. Transport Information Declaration (railroad and road) ADR, RID UN 3077 , 9, III Declaration (transport by air) IATA-DGR UN 3077 , 9, III Declaration (transport by sea) IMDG-Code UN 3077 , 9, III, Marine Pollutant: P Specifications Assay (GC) ≥ 99.0 % Assay (HPLC) 99.0 - 101.5 % Identity (Identification 1 (JPE)) passes test Identity (IR-spectrum) passes test Identity (Identification 2 (JPE)) passes test Identity (HPLC) passes test Appearance White to yellowish crystalline powder. Appearance of solution (100 g/l, methanol (Ph. Eur.)) Clear and not more intense in color than reference solutionY₅ or BY₅ (Ph. Eur.). Appearance of solution (100 g/l, ethanol (95 )% (JPE)) Clear and colorless. Solidification temperature 69.2 - 70.0 °C Melting point 69.5 - 72.0 °C Absorption maximum λmax. (ethanol abs.) 277 - 279 nm Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; ethanol abs.) 81 - 88 Spec. Absorptivity A 1%/1cm (λ₂₇₈ nm; 0.05 g/l; ethanol (95 %)) 82 - 88 Heavy metals (as Pb) ≤ 10 ppm Sulphate (SO₄) ≤ 150 ppm As (Arsenic) ≤ 3 ppm Hg (Mercury) ≤ 1 ppm Pb (Lead) ≤ 2 ppm tert-butanol (GC) ≤ 1000 ppm Diisobutylene (GC) ≤ 100 ppm p-Cresol ≤ 0.1 % 2-Propanol (GC) ≤ 2000 ppm Related substances (TLC) ≤ 0.5 % Related substances (HPLC) (p-Cresol oder m-cresol) ≤ 0.1 % Related substances (HPLC) (3-tert-Butyl-4-hydroxyanisole) ≤ 0.1 % Related substances (HPLC) (3,5-Di-tert-butyl-4-hydroxybenzoic acid) ≤ 0.1 % Related substances (HPLC) (2-tert-Butyl-4-methylphenol or 2-tert-butyl-5-methylphenol) ≤ 0.1 % Related substances (HPLC) (3,5-Di-tert-butyl-4-hydroxy benzaldehyde) ≤ 0.1 % Related substances (HPLC) (4,6-Di-tert-butyl-m-cresol) ≤ 0.1 % Related substances (HPLC) (2,6-Di-tert-butyl-phenol) ≤ 0.1 % Related substances (HPLC) (Any unspecified impurity) ≤ 0.1 % Related substances (HPLC) (Sum of all impurities) ≤ 0.7 % Other residual solvents (ICH Q3C) passes test Sulfated ash (600 °C) ≤ 0.002 % Water (according to Karl Fischer) ≤ 0.2 % Residues of metal catalysts or metal reagents acc. to EMEA/CHMP/SWP/4446/2000 are not likely to be present. Corresponds to Ph. Eur., JPE, NF, E 321. Conforms to the purity criteria on food additives according to the current European Commission Regulation.
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