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4414-25-9

Phosphorodifluoridic acid, trimethylsilyl ester, also known as trimethylsilyl difluorophosphate, is a chemical compound with the formula (CH3)3SiOP(O)F2. It is a colorless liquid that is soluble in organic solvents and is commonly used as a reagent in organic synthesis, particularly in the formation of phosphorus-containing compounds. Phosphorodifluoridic acid, trimethylsilyl ester is a derivative of phosphorodifluoridic acid, where the trimethylsilyl group (TMS) replaces one of the hydroxyl groups, enhancing its stability and reactivity. It is an important intermediate in the synthesis of various organophosphorus compounds and is also used in the preparation of phosphoramidites, which are key components in the synthesis of oligonucleotides and nucleic acids. Due to its reactivity, it is essential to handle Phosphorodifluoridic acid, trimethylsilyl ester with care, following proper safety protocols.

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  • 4414-25-9 Structure

  • Basic information

    1. Product Name: Phosphorodifluoridic acid, trimethylsilyl ester
    2. Synonyms:
    3. CAS NO:4414-25-9
    4. Molecular Formula: C3H9F2O2PSi
    5. Molecular Weight: 174.159
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 4414-25-9.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: Phosphorodifluoridic acid, trimethylsilyl ester(CAS DataBase Reference)
    10. NIST Chemistry Reference: Phosphorodifluoridic acid, trimethylsilyl ester(4414-25-9)
    11. EPA Substance Registry System: Phosphorodifluoridic acid, trimethylsilyl ester(4414-25-9)

  • 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: 4414-25-9(Hazardous Substances Data)

4414-25-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4414-25-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,1 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4414-25:
(6*4)+(5*4)+(4*1)+(3*4)+(2*2)+(1*5)=69
69 % 10 = 9
So 4414-25-9 is a valid CAS Registry Number.

4414-25-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name Trimethylsilyldifluorophosphat

1.2 Other means of identification

Product number -
Other names Difluor-trimethylsilyl-phosphat

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:4414-25-9 SDS

4414-25-9Downstream Products

4414-25-9Relevant 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 (2016/05/19)

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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