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heptafluorobutyric acid (375-22-4)

Identification
Name:heptafluorobutyric acid
Synonyms:HFBA; Perfluorobutyric acid; HEPTAFLUOROBUTYRC ACID
CAS:375-22-4
EINECS: 206-786-3
Molecular Formula: C4HF7O2
Molecular Weight: 214.04
InChI: InChI=1/C4HF7O2/c5-2(6,1(12)13)3(7,8)4(9,10)11/h(H,12,13)
Molecular Structure: (C4HF7O2) HFBA; Perfluorobutyric acid; HEPTAFLUOROBUTYRC ACID
Properties
Transport:UN 3265
Density:1.645
Stability:Stable under normal temperatures and pressures.
Refractive index:1.3
Water Solubility:miscible
Solubility:Miscible with water
Appearance:clear, colorless liquid.
Specification:

The IUPAC name of Heptafluorobutyric acid is 2,2,3,3,4,4,4-heptafluorobutanoic acid . With the CAS registry number 375-22-4, it is also named as Heptafluoro-1-butanoic acid ; Heptafluorobutanoic acid ; Heptafluorobutyric acid ; Kyselina heptafluormaselna ; Perfluorobutanoic acid ; Perfluoropropanecarboxylic acid ; Butanoic acid, 2,2,3,3,4,4,4-heptafluoro- ; Butanoic acid, heptafluoro- .

The Heptafluorobutyric acid is clear colorless to faintly yellow liquid. As the fluorinated derivative of butyric acid, this product is obtained by electrofluorination of the corresponding butyryl fluoride. It is highly toxic. It will produce corrosive fumes when react with water or steam. When heated to decomposition it emits toxic fumes of F. So the storage environment should be ventilate, low-temperature and dry. Keep Heptafluorobutyric acid separate from food, oxidant and watery element .

The Heptafluorobutyric acid is used in the sequencing, synthesis, and solubilizing of proteins and peptides. It also has a variety of niche applications in analytical and synthetic chemistry. It is an ion pair reagent for reverse-phase HPLC. Owing to their electrophilicity, esters derived from Heptafluorobutyric acid readily undergo condensation. Specialized ligands for metal ions are generated capitalizing on this property, such as Eufod.

It can easily cause burns. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you should wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

So Heptafluorobutyric acid  shoulded be stored in a cool, dry place. Keep container closed when not in use. Water free area.Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Discard contaminated shoes.

The following is the toxicity data which has been tested.

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 68uL/kg (0.068mL/kg)   "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. Vol. 2, Pg. 56, 1950.
rabbit LD intravenous > 10uL/kg (0.01mL/kg)   "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. Vol. 2, Pg. 56, 1950.

Report:

Reported in EPA TSCA Inventory.

Packinggroup: II
Usage:Ion pairing reagent.
Safety Data
Hazard Symbols C:Corrosive