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Home » ETPB

ETPB: Ethyl triphenyl phosphonium Bromide

Reliable Quaternary Phosphonium Salt for Advanced Phase Transfer Catalysis & Organic, Pharmaceutical and Specialty Chemical Synthesis

Product Description

PapChem Lifesciences offers high-purity Ethyl Triphenyl Phosphonium Bromide (ETPB), a quaternary phosphonium salt widely used as a phase transfer catalyst and intermediate in advanced organic synthesis. ETPB enables improved reactivity, selectivity, and yield in biphasic systems, particularly in complex transformations relevant to pharmaceutical development and specialty chemical manufacturing. Produced under stringent quality controls, our ETPB ensures consistent performance for scalable industrial and R&D applications.

📋 Product Details

Chemical Name : Ethyl Triphenyl Phosphonium Bromide

CAS Number : 1530-32-1

Molecular Formula : C₂₀H₂₀BrP

Molecular Weight : 371.25 g/mol

Synonyms : ETPB, Triphenylphosphonium ethyl bromide, (Ethyl)triphenylphosphonium bromide

🔍 Product Highlights

Appearance : White crystalline powder

Assay : NLT 99% (By Titration)

Water Content : NMT 0.5%

Solubility : Soluble in methanol

Melting Point : 203–209°C

Attributes : Superior physical and chemical properties

⚙️ Applications

💊 Pharmaceutical & Organic Synthesis

Used as a phase transfer catalyst (PTC) in biphasic reaction systems.
Facilitates Wittig-type reactions and olefination reactions in API and intermediate synthesis.
Enhances selectivity and efficiency in organic transformations for drug discovery.

⚗️ Specialty & Fine Chemical Manufacturing

Integral to the preparation of organophosphorus compounds and functionalized molecules.
Acts as a reaction promoter in halogenation, alkylation, and polymer-modification routes.
Valuable in CDMO projects where reproducibility and reaction control are key.

🔬 Laboratory R&D Applications

Ideal for research into nucleophilic substitutions and carbon–carbon coupling reactions.
Often used as a benchmark quaternary salt in studying ionic transfer mechanisms.

📦 Product Packaging and Supply Chain

Standard Packs:

25 kg (Flexible packaging options available as per customer requirement)

Shipping:

Global and domestic delivery with full regulatory assistance

Storage:

Store in tightly sealed containers in a cool, dry place away from direct sunlight

Documentation Available:

COA | MSDS |Other Compliance Documents| Vendor Qualification Docs

Certifications:

🌐 Why Choose PapChem Lifesciences?

🏭 30+ years of remarkable passionate manufacturing journey with 25+ years in international trade.

⚙️ 4 state-of-the-art manufacturing facilities with all the compliances.

👩‍🔬 Highly qualified team of technocrats, experienced professionals, and skilled workforce.

🔬 Well-equipped in-house analytical capabilities and R&D centre.

📦 Value-added products and services like granulation, micronization, customized packaging, and more.

🌍 Global network of efficient supply chain.

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Nutraceutical Grades and Vitamins
Product Name	CAS No.
Indole-3-Carboxaldehyde	487-89-8
Indole-3-Carbinol	700-06-1
3’3 – Diindolylmethane	1968-05-04
Ascorbigen	8075-98-7
N-N Dimethylglycine HCl	2491-06-07
Palmitoylethanolamide	544-31-0
Natural Vitamin D3 Powder- NLT1,00,000IU/g	67-97-0
Benfotiamine	22457-89-2
Riboflavin-5-Phosphate	130-40-5
Methylcobalamin	13422-55-4
Theobromine	83-67-0

Pharmaceutical Reagents ,Intermediates and Speciality Chemicals
Product Name	CAS No.
Phthalimide	85-41-6
Potassium Phthalimide	1074-82-4
N-Hydroxy Phthalimide	524-38-9
N-Methyl Phthalimide	550-44-7
N-Hydroxyl-Methyl Phthalimide	118-29-6
N-(2-Hydroxylethyl) Phthalimide	3891-07-04
N-Chlorophthalimide	3841-09-02
1,2,3,6-Tetrahydrophthalimide	85-40-5
3,4,5,6-Tetrahydrophthalimide	4720-86-9
N-Propyl Phthalimide	5323-50-2
N-Butyl Phthalimide	1515-72-6
N-Isopropyl Phthalimide	304-17-6
Chloramine-T	7080-50-4
Barbituric Acid	67-52-7
1-Hydroxybenzotriazole (HOBT)	80029-43-2
2-Nitrobenzaldehyde (ONB)	552-89-6

Halogen and its Compounds
Product Name	CAS No.
Bromine	7726-95-6
Hydrobromic Acid-48%	10035-10-6
Ethyltriphenylphosphonium Bromide (ETPB)	1530-32-1
Ethyltriphenylphosphonium Iodide (ETPI)	4736-60-1
Ethylene Dibromide (EDBr)	106-93-4

Sr No.	Product Name	% Content	CAS No.
1	Magnesium Bisglycinate 11.7%	11.7 % to 13.5%	14783-68-7
2	Magnesium Glycinate 18%	18% to 20.3%	14783-68-7
3	Magnesium Glycinate 20%	20% to 25%	14783-68-7
4	Magnesium Ascorbate 6.4%	NLT 6.4%	15431-40-0
5	Magnesium Ascorbate 10%	10% to 12.6%	15431-40-0
6	Magnesium Malate 15%	15% to 20%	869-06-7
7	Magnesium Malate 20%	NLT 20%	869-06-7
8	Magnesium Caprylate	6.4% to 8.4%	3386-57-0
9	Magnesium Citrate 17%	NLT 17%	3344-18-1
10	Magnesium Butyrate	11.5% to 13.5%	556-45-6
11	Magnesium Orotate 6%	5.5% to 7.5%	34717-03-8
12	Magnesium Orotate 7%	7.0 to 8.9 %	34717-03-8
13	Calcium Butyrate	NLT 98%	5743-36-2
14	Calcium Citrate 29%	NLT 29%	5785-44-4

Laboratory Reagents
Product Name	CAS No.
Ninhydrin	485-47-2
Murexide (Ammonium Purpurate)	3051-09-0
Dithizone	60-10-6
Alloxan Monohydrate	2244-11-03
Chloranilic Acid	87-88-7
Barium Chloranilate	32458-20-1

ETPB: Ethyl triphenyl phosphonium Bromide

Reliable Quaternary Phosphonium Salt for Advanced Phase Transfer Catalysis & Organic, Pharmaceutical and Specialty Chemical Synthesis

Product Description

📋 Product Details

🔍 Product Highlights

⚙️ Applications

📦 Product Packaging and Supply Chain

🌐 Why Choose PapChem Lifesciences?

Request A Quote

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Chief Executive Officer

MR. VIVEK PATIL

Chief Executive Officer

MR. PARESH PATIL

Accomplished Leader

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Master of Science

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CAS No: 110-52-1

Specifications

Physical Appearance	Clear Colorless to Pale Yellow liquid
Purity	NLT 99%
Water Content	NMT 1%
Density	1.79 to 1.83