Sodi­um bis(fluorosulfonyl)imide CAS 100669-96-3

• Iden­ti­fi­ca­tion
• Prop­er­ties
• Safe­ty Data
• Spec­i­fi­ca­tions & Oth­er Information
• Links
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Iden­ti­fi­ca­tion

CAS Number

100669-96-3

Name

Sodi­um bis(fluorosulfonyl)imide

Syn­onyms

NaF­SI
Bis(fluorosulfonyl)azanide de sodi­um
[French]
[IUPAC name – gen­er­at­ed by ACD/​Name]
Natriumbis(fluorsulfonyl)azanid
[Ger­man]
[IUPAC name – gen­er­at­ed by ACD/​Name]
Sodi­um bis(fluorosulfonyl)azanide
[IUPAC name – gen­er­at­ed by ACD/​Name]

SMILES

O=S(=O)(F)[N-]S(=O)(=O)F.[Na+]

Std­InChI

InChI=1S/F2NO4S2.Na/c1-8(4,5)3-9(2,6)7;/q-1;+1

Std­InChIKey

VCCAT­SJU­U­VER­­FU-UHF­F­­FAOYSA-N

Mol­e­c­u­lar Formula

F2NNaO4S2

Mol­e­c­u­lar Weight

203.109

Prop­er­ties

Appear­ance

White pow­der

Safe­ty Data

Sig­nal Word

Dan­ger

Haz­ard statements

Pre­cau­tion­ary Statements

RIDADR 

NONH for all modes of transport

WGK Germany

3

Spec­i­fi­ca­tions and Oth­er Infor­ma­tion of Our Sodi­um bis(fluorosulfonyl)imide CAS 100669-96-3

Iden­ti­fi­ca­tion Methods

HNMR, HPLC

Puri­ty

99.9% min

Shelf Life

2 years

Stor­age

Under room tem­per­a­ture away from light

Advan­tages

1. Excel­lent Elec­tro­chem­i­cal Sta­bil­i­ty
   The PF₆⁻ anion pos­sess­es a wide elec­tro­chem­i­cal sta­bil­i­ty win­dow ; con­se­quent­ly, it is resis­tant to decom­po­si­tion even under high-volt­age con­di­tions.
   This makes it suit­able for high-volt­age bat­tery sys­tems, where it con­tributes to improved cycling per­for­mance. This is a pri­ma­ry rea­son why it is wide­ly uti­lized in lithi­um-ion bat­ter­ies, sodi­um-ion bat­ter­ies, and supercapacitors.
2. Supe­ri­or Ion­ic Con­duc­tiv­i­ty
   In car­bon­ate-based sol­vents, NaPF₆ exhibits excel­lent sol­u­bil­i­ty, strong dis­so­ci­a­tion capa­bil­i­ties, and high con­duc­tiv­i­ty. As a result, it helps to reduce inter­nal bat­tery resis­tance, enhance rate per­for­mance, and improve low-tem­per­a­­ture performance.
3. PF₆⁻ is a Weak­ly Coor­di­nat­ing Anion
   PF₆⁻ demon­strates weak coor­di­na­tion affin­i­ty toward met­al cations. This offers sev­er­al advan­tages : it min­i­mizes inter­fer­ence with reac­tion active sites, facil­i­tates ion migra­tion, and pro­motes the for­ma­tion of sta­ble elec­trolyte sys­tems. Con­se­quent­ly, it is exten­sive­ly employed in organ­ic syn­the­sis, catal­y­sis, coor­di­na­tion chem­istry, and ion­ic liquids.
4. Pro­motes the For­ma­tion of a Sta­ble SEI Film
   With­in bat­tery sys­tems, the decom­po­si­tion of PF₆⁻ gen­er­ates a flu­o­rine-con­­tain­ing inter­fa­cial lay­er, which aids in the for­ma­tion of a sta­ble SEI (Sol­id Elec­trolyte Inter­phase) film. This, in turn, extends cycle life, improves inter­fa­cial sta­bil­i­ty, and min­i­mizes side reactions.
5. Achiev­able High Puri­ty Lev­els
   Bat­tery-grade NaPF₆ can typ­i­cal­ly be con­trolled to pos­sess extreme­ly low lev­els of mois­ture, met­al ions, and HF impu­ri­ties.
   There­fore, it is ide­al­ly suit­ed for use in high-end bat­ter­ies, semi­con­duc­tor elec­tro­chem­istry, and pre­ci­sion elec­tron­ic materials.

Known Appli­ca­tion

1. Research on Elec­trolytes for Lithi­um and Sodi­um Bat­ter­ies
   NaPF₆ serves as an elec­trolyte salt for Sodi­um-ion Bat­ter­ies (SIBs) and acts as a sup­port­ing elec­trolyte in elec­tro­chem­i­cal research. For instance, it is sol­u­ble in car­bon­ate-based sol­vent sys­tems such as EC/DEC, PC, and DMC. Due to the supe­ri­or elec­tro­chem­i­cal sta­bil­i­ty and high ion­ic con­duc­tiv­i­ty of the PF₆⁻ anion, NaPF₆ is fre­quent­ly uti­lized in the devel­op­ment of lab­o­ra­­to­ry-scale bat­tery systems.
2. Anion Exchange Agents in Organ­ic Syn­the­sis
   As PF₆⁻ is clas­si­fied as a weak­ly coor­di­nat­ing anion, NaPF₆ is com­mon­ly employed to : con­vert halide salts into hexa­flu­o­rophos­phate salts, syn­the­size qua­ter­nary ammo­ni­um PF₆ salts, pre­pare ion­ic liq­uids, and facil­i­tate anion exchange in met­al complexes.
3. Sup­port­ing Elec­trolytes in Elec­tro­chem­istry
   It func­tions as a con­duc­tive salt in var­i­ous elec­tro­chem­i­cal appli­ca­tions, includ­ing cyclic voltam­me­try (CV), elec­trode­po­si­tion, super­ca­pac­i­tors, and elec­tro­catal­y­sis research.
4. Func­tion­al Mate­ri­als and Coor­di­na­tion Chem­istry
   It is uti­lized in the con­struc­tion of PF₆⁻ coor­di­na­tion sys­tems with­in the fields of met­al-organ­ic frame­works (MOFs), coor­di­na­tion chem­istry, OLED mate­ri­als, and lumi­nes­cent materials.
5. Inter­me­di­ates for Ion­ic Liq­uids
   Many PF₆-based ion­ic liq­uids are syn­the­sized via anion exchange reac­tions uti­liz­ing NaPF₆.

Links

This prod­uct is devel­oped by our R&D com­pa­ny Warshel Chem­i­cal Ltd (https://​www​.warshel​.com/).

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