Name: Triethyl Phosphate(TEP),Battery Grade 500g
SKU: EL78-40-0
Price: 460.00 USD
Availability: InStock

Triethyl Phosphate(TEP),Battery Grade 500g

SKU: EL78-40-0

Free Shipping$460.00

Triethyl Phosphate (TEP), Battery Grade (500 g) — liquid flame-retardant phosphate ester for electrolyte safety research. P=O group reduces electrolyte flammability when substituted at 10–30 vol% in carbonate blends. Directly blendable with EC, DMC, EMC, and DEC. Purity ≥99%, H₂O ≤10 ppm, Acid ≤10 ppm. Available from 1 kg to bulk quantities.

Need a bulk order? Request a competitive quote today!

Triethyl Phosphate (TEP), Battery Grade 500g

Chemical Name: Triethyl Phosphate
CAS Number: 78-40-0
Product Code: EL78-40-0
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Triethyl phosphate (TEP) is a flame-retardant phosphate ester used as a co-solvent or additive in electrolyte safety research. Its phosphoryl (P=O) functional group participates in gas-phase radical chain-breaking reactions that inhibit combustion, reducing electrolyte flammability when TEP replaces 10–30 vol% of conventional carbonate solvents. Unlike its aryl counterpart TPP, TEP is a liquid at room temperature and is fully miscible with standard carbonate electrolytes, making it practical for direct blending. Xnergy supplies battery-grade TEP for use in flame-retardant electrolyte formulation and thermal safety studies.

Key Features

• Flame-retardant mechanism — P=O group interrupts combustion radical chains, reducing electrolyte self-extinguishing time (SET)
• Liquid at room temperature — directly blendable with carbonate solvents without pre-dissolution
• Compatible with carbonate electrolytes — miscible with EC, DMC, EMC, and DEC; does not disrupt LiPF₆ dissolution significantly
• Reduced flammability at 10–30 vol% — flame suppression effective at practical substitution ratios
• Purity ≥99% / H₂O ≤10 ppm — battery-grade control for reproducible safety measurements
• Flexible volumes — available from 1 kg laboratory packs to production quantities

Specification

Property	Specification
Grade	Battery Grade
Purity	≥99%
H₂O	≤10 ppm
Acid	≤10 ppm
Pack Size	500 g

Application Areas

• Self-extinguishing electrolyte (SEE) formulation for abuse-tolerance studies
• Electrolyte flammability reduction benchmarking (flash point, limiting oxygen index, SET)
• Thermal runaway mitigation research for pouch and prismatic cells
• Phosphate-based electrolyte development for safer EV battery chemistries
• Comparative phosphate study (TEP liquid vs. TPP solid) for flame-retardant efficacy
• Fire safety compliance testing for cell manufacturers and safety certification labs

Related Products

• Triphenyl Phosphate (TPP), Battery Grade
• Ethylene Carbonate (EC), Battery Grade
• Dimethyl Carbonate (DMC), Battery Grade
• Fluoroethylene Carbonate (FEC), Battery Grade
• Lithium Bis(fluorosulfonyl)imide (LiFSI), Battery Grade
• Browse the full Solvents category.