1.08262

Trifluoroacetic acid

for spectroscopy Uvasol^®

• Synonym(s): TFA
• Linear Formula: CF₃COOH
• CAS Number: 76-05-1
• Molecular Weight: 114.02
• Beilstein: 742035
• MDL number: MFCD00004169
• EC Index Number: 200-929-3

Properties

• vapor density: 3.9 (vs air)
• Quality Level: 100
• vapor pressure: 97.5 mmHg ( 20 °C)
• Assay: ≥99.8% (acidimetric)
• form: liquid
• technique(s): UV/Vis spectroscopy: suitable
• impurities: ≤10% Water (Karl Fischer)
• evapn. residue: ≤0.005%
• color: APHA: ≤10
• transmittance: 265 nm, ≥10.0%; 305 nm, ≥50.0%; 320 nm, ≥80.0%; 325 nm, ≥90.0%
• refractive index: n20/D 1.3 (lit.)
• pH: 1 (10 g/L in H₂O)
• bp: 72.4 °C (lit.)
• mp: −15.4 °C (lit.)
• solubility: soluble 10 g/mL
• density: 1.489 g/mL at 20 °C (lit.)
• storage temp.: 2-30°C
• SMILES string: OC(C(F)(F)F)=O
• InChI: 1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)
• InChI key: DTQVDTLACAAQTR-UHFFFAOYSA-N

Description

General description

Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol<TMSYMBOL></TMSYMBOL> 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<TMSYMBOL></TMSYMBOL> solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified.

Analysis Note

Assay (acidimetric): ≥ 99.8 %
Water (K. F.): ≤ 0.10 %
Colour number (Apha): ≤ 10
Evaporation residue: ≤ 0.005 %
UV-transmission (at 265 nm): ≥ 10.0 %
UV-transmission (at 305 nm): ≥ 50.0 %
UV-transmission (at 320 nm): ≥ 80.0 %
UV-transmission (from 325 nm): ≥ 90.0 %

Legal Information

UVASOL is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H314 - H332 - H412
• Precautionary Statements: P261 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 2
• Flash Point(F): 212.0 °F - Pensky-Martens closed cup
• Flash Point(C): > 100 °C - Pensky-Martens closed cup