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CAS

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5668-94-0

Bis(trimethylsilyl) phosphorofluoridate, also known as BTMSPF, is a chemical compound with the formula (Me3Si)2P(O)F. It is a colorless, volatile liquid that is sensitive to moisture and air. BTMSPF is a potent inhibitor of acetylcholinesterase, an enzyme responsible for breaking down the neurotransmitter acetylcholine in the nervous system. This inhibition leads to the accumulation of acetylcholine, causing overstimulation of muscles and nerves, which can result in symptoms such as muscle twitching, difficulty breathing, and seizures. Due to its high toxicity and potential use as a chemical warfare agent, BTMSPF is classified as a Schedule 1 chemical weapon by the Chemical Weapons Convention. It is important to handle bis(trimethylsilyl) phosphorofluoridate with extreme caution and in accordance with strict safety protocols.

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  • 5668-94-0 Structure

  • Basic information

    1. Product Name: bis(trimethylsilyl) phosphorofluoridate
    2. Synonyms: bis(trimethylsilyl) phosphorofluoridate
    3. CAS NO:5668-94-0
    4. Molecular Formula:
    5. Molecular Weight: 244.35
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 5668-94-0.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: bis(trimethylsilyl) phosphorofluoridate(CAS DataBase Reference)
    10. NIST Chemistry Reference: bis(trimethylsilyl) phosphorofluoridate(5668-94-0)
    11. EPA Substance Registry System: bis(trimethylsilyl) phosphorofluoridate(5668-94-0)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 5668-94-0(Hazardous Substances Data)

5668-94-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5668-94-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,6 and 8 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5668-94:
(6*5)+(5*6)+(4*6)+(3*8)+(2*9)+(1*4)=130
130 % 10 = 0
So 5668-94-0 is a valid CAS Registry Number.

5668-94-0Downstream Products

5668-94-0Relevant articles and documents

Lifetime limit of tris(trimethylsilyl) phosphite as electrolyte additive for high voltage lithium ion batteries

Qi, Xin,Tao, Liang,Hahn, Hendrik,Schultz, Carola,Gallus, Dennis Roman,Cao, Xia,Nowak, Sascha,R?ser, Stephan,Li, Jie,Cekic-Laskovic, Isidora,Rad, Babak Rezaei,Winter, Martin

, p. 38342 - 38349 (2016)

The tris(trimethylsilyl) phosphite (TMSPi) is considered as an ideal electrolyte additive for lithium ion batteries. In this work, its positive effect as well as its failure mechanism in a LiPF6 containing electrolyte was studied by means of selected electrochemical, structural and analytical techniques. The LiNi0.5Co0.2Mn0.3O2/graphite cells with TMSPi as electrolyte additive were cycled between 2.8 and 4.6 V. Thanks to the compact cathode electrolyte interphase formed by the oxidative decomposition of TMSPi in a freshly prepared TMSPi containing electrolyte, both the discharge capacity and the cycling stability of cells were enhanced. However, our results also show that TMSPi actually reacts with LiPF6 at room temperature. TMSPi is consumed by this spontaneous reaction after aging for certain time. In addition, a part of the fluorophosphates, generated from the hydrolysis of LiPF6, is bonded to one or two TMS groups, causing a decrease in the fluorophosphate content in the CEI film. Consequently, the cycling stability of the lithium ion cells with aged TMSPi containing electrolyte deteriorates. The obtained results offer important insights into the practical application of TMSPi, which means that TMSPi can only be used as an effective additive in a freshly prepared LiPF6 containing electrolyte.

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