Moneide Chemicals
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Tetraphenyl Phosphonium Bromide 99% Purity - In Stock?
- Time of issue:Oct . 11, 2025 09:16
(Summary description)Tangshan Moneide Trading Co., Ltd. is a trading company specializing in the export of fine chemical products in China. Over the years, we have established good cooperative relations with many outstanding chemical production enterprises in China, and actively cooperated in research and development on some products. Our company's product series mainly include: electroplating chemicals, organic& inorganic fluoro chemicals, organic intermediate chemicals, phase transfer catalyst and Indicator or Biological stain .
- Categories:Company dynamic
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- Time of issue:2019-12-30 10:55
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If you’re scouting for tetraphenyl phosphonium bromide, you’re likely juggling purity, consistency, and a supplier who doesn’t disappear when scale-up gets bumpy. I’ve seen teams switch salts mid-project because of subtle impurities; it’s not fun. Below is what the market is actually doing, what to ask vendors, and the data that matter. Demand for tetraphenyl phosphonium bromide is quietly rising across catalysis (phase-transfer, base-sensitive SN2), mitochondrial-targeting research (TPP⁺ label chemistry), and advanced materials where stable, bulky cations help tune ionic domains. The trend? Tighter specs (especially halide cross-contamination), cleaner dissolution in MeCN/MeOH, and better documentation for REACH/ISO. Surprisingly, smaller lots with robust CoAs are winning over “cheap in bulk” options. tetraphenyl phosphonium bromide shows up in: phase-transfer catalysis for base-sensitive substitutions; synthesis of TPP⁺-tagged bioactive probes; ion-pairing and counterion exchange in materials; and as a reference TPP⁺ salt in mitochondrial transport studies. Advantages: thermal robustness, bulky cation for organic-phase solubility, and—many customers say—clean filtration and predictable crystallinity. A mid-scale lab swapped their previous salt for tetraphenyl phosphonium bromide (≥99%) in a PTC-assisted halogen-exchange. After adjusting base equivalents and stir rate (nothing exotic), isolated yield rose from 86% to 93%, and workup time dropped by ~15% thanks to faster phase separation. Not earth-shattering, but over six batches the solvent savings paid for the upgrade twice over. Origin: 2-7-523 Jidong Building Materials Tangshan, Hebei 064000 China. Typical packs: 25 g, 100 g, 1 kg HDPE with foil liner; custom on request. Service life is usually 24–36 months sealed and dry—honestly, stable enough that most labs use it up before expiry.Tetraphenyl Phosphonium Bromide (TPPBr): real-world notes from the lab bench to pilot scale
Industry snapshot
Product specs (typical, lot-to-lot may vary)
Parameter
Typical value
Method / Note
CAS
2751-90-8
Registry
Molecular formula / mass
C24H20PBr; ≈ 419.3 g·mol⁻¹
Calculated
Appearance
White to off‑white crystalline powder
Visual
Assay (HPLC)
≥ 99.0%
HPLC, ICH Q2(R1) validated
Water (KF)
≤ 0.5%
Karl Fischer, ISO 760
Melting point
≈ 275 °C (dec.)
Differential method
Solubility
Good in MeOH, MeCN, DMSO; limited in water
Qualitative, 20 °C
Halide impurities (Cl⁻)
≤ 0.10%
Ion chromatography, ASTM D4327
Storage / shelf life
2–8 °C, dry; 24–36 months sealed
Real-world use may vary
How it’s made and qualified (short version)
Where it’s used (with pros)
Vendor comparison (indicative)
Vendor
Purity (HPLC)
Lead time
Docs
Customization
Certs
MoneideChem (Hebei, CN)
≥99.0%
≈ 7–12 days
CoA, SDS, TDS
Particle size, packaging, IC cutoffs
ISO 9001; REACH-ready
Vendor A
≥98.0%
2–3 weeks
CoA, SDS
Limited
ISO 9001
Vendor B
≥99.0%
1–2 weeks
CoA, SDS, basic IC
Custom pack only
RoHS statement
Case study: modest tweak, measurable gain
Testing, standards, and paperwork
Practical tips
Authoritative citations
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