13537-32-1 Usage
Chemical Properties
Colorless, viscous liquid. Miscible with water.
Uses
Metal cleaners, electrolytic or chemical polishing agents, formation of protective coatings for
metal surfaces, catalyst.
General Description
A colorless liquid. Corrosive to metals and tissue. Used in metal cleaning, as a chemical polishing agent and as a catalyst.
Air & Water Reactions
Soluble in water with release of heat.
Reactivity Profile
FLUOROPHOSPHORIC ACID neutralizes chemical bases (for example: amines and metal hydroxides) to form salts. Neutralization can generate dangerously large amounts of heat in small spaces. May react with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain classes of organic compounds. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Incompatible with sodium tetrahydroborate. May react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. May catalyze (increase the rate) of chemical reactions.
Hazard
Strong irritant to tissue.
Health Hazard
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Safety Profile
A corrosive and irritating material to skin, eyes, and mucous membranes. When heated to decomposition it emits very toxic fumes of Fand POx. See also FLUORIDES.
Check Digit Verification of cas no
The CAS Registry Mumber 13537-32-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,5,3 and 7 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13537-32:
(7*1)+(6*3)+(5*5)+(4*3)+(3*7)+(2*3)+(1*2)=91
91 % 10 = 1
So 13537-32-1 is a valid CAS Registry Number.
InChI:InChI=1/FH2O3P/c1-5(2,3)4/h(H2,2,3,4)
13537-32-1Relevant articles and documents
Initial stages of thermal decomposition of LiPF6-based lithium ion battery electrolytes by detailed Raman and NMR spectroscopy
Wilken, Susanne,Treskow, Marcel,Scheers, Johan,Johansson, Patrik,Jacobsson, Per
, p. 16359 - 16364 (2013/09/23)
Independent of the specific electrode chemistry, the state-of-the-art lithium ion battery electrolytes based on LiPF6 in organic solvents have a low thermal abuse tolerance and poor cycle life at elevated temperatures. We present here a detailed investigation of the initial stages of the thermal decomposition of LiPF6 in EC/DMC stored at 85 °C using Raman and NMR spectroscopy. During storage (up to 160 h), significant amounts of CO 2 are evolved, as detected in the Raman spectra. Time-resolved 1H, 31P, and 19F NMR spectra show the evolution of POF3, POF(OH)2, POF2(OCH2CH 2)nF, and POF2OMe as reactive decomposition products. Our unique 19F NMR approach, measuring while heating with both high energy and time resolution, allows for a first quantitative analysis of the evolved species and reveals several decomposition reactions during the first 30 min up to 72 h, where the rates of HF and POF2OMe formation are surprisingly linear. EC is found to be much less reactive compared to DMC. All information is used in the formulation of an updated decomposition pathway chart for LiPF6 based electrolytes. The Royal Society of Chemistry 2013.
Thermal decomposition of LiPF6-based electrolytes for lithium-ion batteries
Campion, Christopher L.,Li, Wentao,Lucht, Brett L.
, p. A2327-A2334 (2008/10/09)
The thermal decomposition of lithium-ion battery electrolytes 1.0 M LiPF6 in one or more carbonate solvents has been investigated. Electrolytes containing diethyl carbonate (DEC), ethylene carbonate (EC), a 1:1 mixture of EC/dimethyl carbonate (DMC), and a 1:1:1 mixture EC/DMC/DEC have been investigated by multinuclear nuclear magnetic spectroscopy, gas chromatography with mass selective detection, and size exclusion chromatography. Thermal decomposition affords products including: carbon dioxide (CO 2), ethylene (CH2CH2), dialkylethers (R 2O), alkyl fluorides (RF), phosphorus oxyfiuoride (OPF3), fluorophosphates [OPF2OR, OPF(OR)2], fluorophosporic acids [OPF2OH, OPF(OH)2], and oligoethylene oxides. The mechanism of decomposition is similar in all LiPF6/carbonate electrolytes. Trace protic impurities lead to generation of OPF2OR, which autocatalytically decomposes LiPF6 and carbonates. The presence of DEC leads to the generation of ethylene, while the presnce of EC leads to the generation of capped oligothylene oxides [OPF2(OCH 2CH2)nF].
