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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.

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 (15 °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	120 hPa (37.80 °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. P233: Keep container tightly closed. P273: Avoid release to the environment. P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor. P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P331: Do NOT induce vomiting. P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
Signal Word	Danger
RTECS	SA3320000
Storage class	3 Flammable liquids
WGK	WGK 2 obviously hazardous to water
Disposal	1 Strongly contaminated halogen-free organic solvents: container A.

Safety Information
Categories of danger	highly flammable, irritant, harmful, dangerous for the environment

Storage and Shipping Information
Storage	Store at +2°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 %
Color	≤ 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

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