Description Catalogue Number 104718 Synonyms 2,2,4-Trimethylpentane, Isobutyltrimethylmethane, iso-Octane Description Isooctane Overview Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol® solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol® solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph Eur and ACS. Product Information CAS number 540-84-1 EC index number 601-009-00-8 EC number 208-759-1 Hill Formula C₈H₁₈ Chemical formula CH₃C(CH₃)₂CH₂CH(CH₃)CH₃ Molar Mass 114.23 g/mol HS Code 2901 10 00 Structure formula Image Applications Application Isooctane for spectroscopy Uvasol®. CAS 540-84-1, EC Number 208-759-1, chemical formula CH₃C(CH₃)₂CH₂CH(CH₃)CH₃. Physicochemical Information Boiling point 99 °C (1013 hPa) Density 0.69 g/cm3 (20 °C) Explosion limit 1 %(V) Flash point -12 °C Ignition temperature 410 °C Melting Point -107 °C Saturation concentration (air) 239 g/m3 (20 °C) Vapor pressure 51 hPa (20 °C) Solubility 0.56 mg/l Toxicological Information LD 50 oral LD50 Rat > 2500 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H225: Highly flammable liquid and vapour. H304: May be fatal if swallowed and enters airways. H315: Causes skin irritation. H336: May cause drowsiness or dizziness. H410: Very toxic to aquatic life with long lasting effects. Precautionary Statement(s) P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P240: Ground/bond container and receiving equipment. P273: Avoid release to the environment. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P403 + P233: Store in a well-ventilated place. Keep container tightly closed. RTECS SA3320000 Storage class 3 Flammable liquids WGK WGK 2 water endangering Disposal 1 Strongly contaminated halogen-free organic solvents: container A. Safety Information Hazard Symbols Harmful Flammable Dangerous for the environment Categories of danger highly flammable, irritant, harmful, dangerous for the environment R Phrase R 11-38-65-67-50/53 Highly flammable.Irritating to skin.Harmful: may cause lung damage if swallowed.Vapours may cause drowsiness and dizziness.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. S Phrase S 9-16-29-33-60-61-62 Keep container in a well-ventilated place.Keep away from sources of ignition - No smoking.Do not empty into drains.Take precautionary measures against static discharges.This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label. Storage and Shipping Information Storage Store at +5°C to +30°C. Transport Information Declaration (railroad and road) ADR, RID UN 1262 , 3, II Declaration (transport by air) IATA-DGR UN 1262 , 3, II Declaration (transport by sea) IMDG-Code UN 1262 , 3, II, Marine Pollutant: P Specifications Purity (GC) ≥ 99.8 % Evaporation residue ≤ 0.0002 % Water ≤ 0.005 % Colour ≤ 10 Hazen Acidity ≤ 0.0002 meq/g Alkalinity ≤ 0.0002 meq/g Fluorescence (as quinine at 254 nm) ≤ 1.0 ppb Fluorescence (as quinine at 365 nm) ≤ 1.0 ppb Transmission (at 205nm) ≥ 30 % Transmission (at 215 nm) ≥ 65 % Transmission (at 220 nm) ≥ 80 % Transmission (at 225 nm) ≥ 85 % Transmission (at 235 nm) ≥ 90 % Transmission (at 245 nm) ≥ 98 % Transmission (from 255 nm) ≥ 99 % Absorbance (at 205nm) ≤ 0.52 Absorbance (at 215 nm) ≤ 0.19 Absorbance (at 220 nm) ≤ 0.10 Absorbance (at 225 nm) ≤ 0.07 Absorbance (at 235 nm) ≤ 0.05 Absorbance (at 245 nm) ≤ 0.01 Absorbance (from 255 nm) ≤ 0.004 Meet the requirements of "Specific use spectroscopy" according ACS and Reag. Ph Eur