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.
Signal Word	Danger
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

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MERCK 104718 Isooctane for spectroscopy Uvasol®. CAS 540-84-1, EC Number 208-759-1, chemical formula CH₃C(CH₃)₂CH₂CH(CH₃)CH₃

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