부틸트리페닐포스포늄 브로마이드 BTPB CAS 1779-51-7

Tree Chem supplies Butyltriphenylphosphonium Bromide (CAS 1779-51-7) for customers who need to purchase high-purity phosphonium salts for synthetic chemistry and formulation development. This product is commonly manufactured and supplied in crystalline form, offering good stability and handling characteristics during storage and transport.

Butyltriphenylphosphonium Bromide is mainly used as a Wittig-type reagent precursor and phase-transfer active phosphonium salt. Tree Chem supports customers in pharmaceutical, agrochemical, and fine chemical sectors with flexible supply and technical support. For specifications and commercial support, please contact info@cntreechem.com.

사양

기본 정보

기술 사양

응용 프로그램

Phase-Transfer Catalysis for Organic Synthesis

• Butyltriphenylphosphonium bromide (BTPB) is widely applied as a phase-transfer catalyst when a reaction involves an aqueous inorganic reagent and an organic-phase substrate. In these biphasic systems, BTPB helps carry reactive ionic species into the organic layer, which often raises conversion and shortens reaction time compared with uncatalyzed conditions.
• BTPB is commonly used in nucleophilic substitution routes where inorganic salts must react efficiently in organic media, as well as in alkylation workflows involving active methylene compounds. It is also used in oxidation and epoxidation reactions that rely on aqueous oxidants, where improved interphase transport can translate into more consistent performance and easier scale-up.

Wittig Olefination and Alkene Construction

• BTPB is used as a precursor for phosphorus ylides in Wittig reactions, enabling conversion of aldehydes or ketones into alkenes. In practice, BTPB is deprotonated with a strong base to generate the ylide in situ, then the ylide is reacted with a carbonyl substrate to form a C=C bond under controlled temperature and inert conditions.
• This application is particularly valuable for building alkene intermediates that feed into further transformations such as hydrogenation, epoxidation, cyclization, or cross-coupling. Because the ylide can be generated on demand, BTPB supports routine execution in both research and manufacturing environments without needing to isolate highly reactive intermediates.

Pharmaceutical Intermediates and Fine Chemical Routes

• BTPB is used in multi-step pharmaceutical intermediate synthesis where carbon–carbon bond formation and phase-limited reactions are central steps. It can appear either as a key reagent platform in olefination sequences or as a catalyst enabling biphasic transformations that improve process throughput.
• BTPB is also positioned for specialty intermediate production where reaction efficiency, repeatable conversion, and manageable workup are priorities. This use spans a range of fine chemical targets and route designs, especially when inorganic reagents must be brought into effective contact with organic substrates.
• Ionic Liquids and Deep-Eutectic-Solvent Related Chemistry
• BTPB is used as a precursor for ionic-liquid-type materials through anion exchange, producing phosphonium-based systems that can be tuned for solvent polarity, recyclability, and application-specific performance. These materials are relevant to “low volatility” solvent development and process intensification where conventional organic solvents present handling or environmental constraints.
• In addition, BTPB-based solvent systems are explored as functional media in separation or electrochemical contexts, where the phosphonium cation framework contributes stability and enables customized electrolyte or extraction behavior.

Powder Coatings and Heat-Resistant Coating Systems

• BTPB functions as a cure catalyst in powder coating formulations, including hybrid systems designed for controlled gloss and heat-resistant coatings intended for high-temperature service. In these applications, low catalyst loadings are used to promote efficient crosslinking during bake while maintaining workable processing and film formation.
• In heat-resistant powder coatings, BTPB is used alongside polyester binders, curing agents, heat-resistance modifiers, fillers, pigments, and flow additives. This combination targets durable cured films with stable appearance and performance under thermal exposure.
• Epoxy Resins, Adhesives, and Flame-Retardant Epoxy Systems
• BTPB is applied as a catalyst/accelerator in epoxy resin formulations for coatings, adhesives, and composites. Its role is to support cure development (ambient or heat-accelerated) while enabling formulation flexibility through filler loading and rheology control.
• BTPB is also included in epoxy systems designed for improved flame-retardant behavior, where phosphonium-based catalyst packages contribute to char-forming tendencies and help the resin network develop under controlled conditions. These formulations are built to balance processing window, cure completeness, and end-use performance.

Fluoroelastomer Compounding and Cure Acceleration

• BTPB is used in fluoroelastomer (FKM) formulations as a cure accelerator and adhesion-promoting component. In compounding practice, it helps tune reactivity during vulcanization while maintaining latency so the rubber mix remains stable during processing and handling.
• This application is also tied to manufacturing efficiency: reduced mold fouling and improved adhesion can lower downtime and improve part quality. BTPB is therefore positioned for elastomer parts that require heat and chemical resistance with consistent processing behavior.

폴리아크릴레이트 고무(ACM) 경화 시스템

• BTPB is used as a curative in ACM rubber, typically combined with co-curatives and fillers to build a thermally stable crosslinked network. These curing packages are designed to deliver practical benefits such as controlled cure behavior and long storage stability of uncured compounds.
• Performance targets described for ACM systems include low compression set and anti-fouling tendencies, which are important for seals and gaskets operating under heat and oil exposure. The long shelf life of uncured compounds is also a key manufacturing advantage in batch production environments.

Electrochemical and Battery-Related Applications

• BTPB and related phosphonium systems are explored in advanced electrolyte designs, including polymer-electrolyte concepts where a phosphonium-based component can act as a plasticizer or conductivity enhancer. These approaches aim to balance ionic conductivity, electrochemical stability window, and thermal stability.
• BTPB-based solvent systems are also discussed for zinc–bromine flow battery electrolytes, where they can improve bromine retention and support cycle stability. Separately, BTPB can serve as a supporting electrolyte or additive in electrochemical cells used for electroorganic synthesis, electrodeposition, and related electrochemical operations.

Corrosion Inhibition in Acidic Media

• BTPB derivatives are described as corrosion inhibitors in acidic environments, where adsorption on metal surfaces forms a protective film and reduces anodic dissolution. In practical use, such systems are tuned by inhibitor concentration and may incorporate synergists to improve efficiency.
• This role is relevant in industrial pickling, acid cleaning, and process streams where steel protection is needed without significantly complicating the chemistry of the bath.

Textile Processing and Auxiliary Chemistry

• BTPB is used in textile dyeing processes, including disperse dyeing of polyester, where it supports dye dispersion and penetration under high-temperature dyeing conditions. It is also described in enzymatic desizing of cotton, where it can help improve process efficiency under controlled pH and temperature.
• Beyond dyeing and desizing, BTPB is described for printing paste applications where it can influence color yield and pattern definition. These uses position BTPB as a niche auxiliary in textile wet processing where bath behavior and mass transfer are important.

Water Treatment and Resource Recovery

• BTPB is used in heavy-metal removal and precious-metal extraction concepts via ion-association complex formation, enabling transfer or separation of target species from aqueous solutions. These approaches are relevant where selective recovery or removal is preferred over bulk precipitation.
• BTPB is also described as a coagulation/flocculation aid in wastewater treatment for industrial effluents. In such cases, dosing is optimized to support clarification performance while maintaining manageable downstream handling.

Agriculture and Related Industrial Formulations

• BTPB derivatives are described in herbicide emulsifiable concentrate designs as emulsifiers and stabilizers, supporting formulation stability in typical solvent systems. It is also mentioned in controlled-release fertilizer concepts as a coating-related component that can contribute to slow-release behavior.
• These uses place BTPB in application development where formulation stability and delivery control are central objectives rather than purely synthetic chemistry.

Safety, Handling, and Storage in Industrial Use

• BTPB is characterized as hygroscopic and requires moisture protection to maintain handling properties and consistent performance. In industrial workflows, tight sealing, dry storage, and segregation from strong oxidizers are emphasized as core handling controls.
• Because it is described with significant health and aquatic-environment hazards, practical use focuses on ventilation, dust avoidance, appropriate PPE, and disciplined exposure-response procedures to support safe manufacturing and laboratory operations.

보관 및 취급

• Store in tightly sealed containers in a cool, dry, and well-ventilated place.
• Protect from moisture and direct sunlight.
• 강한 산화제 및 산과의 접촉을 피하십시오.
• Use clean, dry tools and containers during handling.
• Ground containers and equipment when transferring material to prevent static discharge.

사용 공지

• This product is intended for professional chemical synthesis and research use only.
• Always verify reaction compatibility and purity requirements before use.
• Avoid inhalation of dust and direct contact with skin or eyes.
• Wear suitable protective equipment when handling.
• Dispose of residues according to local chemical waste regulations.
• A general phase-transfer catalysis system can use BTPB at about 1–5 mol% in a biphasic aqueous base/organic solvent setup (such as toluene, dichloromethane, or THF) at roughly 25–100°C for about 1–12 hours, using BTPB to shuttle ionic reagents into the organic phase and improve conversion.
• A nucleophilic substitution route can run aryl halides with salts such as sodium cyanide or potassium fluoride using BTPB at about 1–3 mol% in a toluene/water biphasic system at around 80–100°C, positioning BTPB as the phase-transfer catalyst for benzonitrile or fluoroarene formation.
• An alkylation workflow can combine an active methylene substrate with an alkyl halide using BTPB at about 2–5 mol% in dichloromethane with aqueous sodium hydroxide from room temperature to about 50°C, using BTPB to accelerate biphasic C–C bond formation.
• An oxidation setup can process alcohols with aqueous oxidants using BTPB at about 3–5 mol% in a dichloromethane/aqueous hypochlorite system at about 0–25°C, using BTPB to improve interphase transport and oxidation efficiency.
• An epoxidation route can react alkenes with peroxide-based oxidants using BTPB at about 2–4 mol% in a toluene/water system at about 40–60°C, positioning BTPB as the catalyst supporting epoxide formation for intermediate manufacture.
• A Wittig olefination can generate a ylide by deprotonating BTPB with a strong base (such as potassium tert-butoxide, n-butyllithium, or sodium hexamethyldisilazide) in anhydrous THF, then adding a carbonyl compound at about 0–25°C for about 1–2 hours to convert the carbonyl into the target alkene.
• An ionic-liquid preparation can perform anion exchange by combining BTPB at 1.0 equivalent with an anion source (such as bis(trifluoromethanesulfonyl)imide, tetrafluoroborate, or hexafluorophosphate) in acetonitrile or methanol at about 25–60°C for about 6–24 hours to obtain a tailored phosphonium ionic material.
• A low-gloss hybrid powder coating can formulate acid-functional resin at about 100 parts with epoxy resin at about 50–60 parts and BTPB at about 0.5–2.0 parts plus pigments and flow additives, then cure at about 180–200°C for about 15–20 minutes using BTPB as the cure catalyst.
• A heat-resistant powder coating can combine hydroxyl-functional polyester resin with a uretdione curing agent and BTPB at about 0.5–2.0 parts, plus silicone resin, mineral fillers, and pigments, then bake at about 232°C for about 15 minutes to use BTPB to promote controlled crosslinking in high-temperature service coatings.
• A general-purpose epoxy formulation can use epoxy resin at about 100 parts with hardener at about 80–100 parts and BTPB at about 0.5–3.0 parts, plus fillers and thixotropes as needed, curing at ambient temperature for 24–72 hours or accelerating at about 80–120°C for about 2–4 hours.
• A standard FKM compound can set fluoroelastomer at 100 phr with carbon black at about 20–40 phr, magnesium oxide at about 3–5 phr, bisphenol AF at about 2–4 phr, and BTPB at about 0.5–2.0 phr, curing at about 175–185°C for about 15–20 minutes followed by post-cure at about 200–230°C for several hours.
• An ACM curing package can formulate polyacrylate rubber at 100 phr with BTPB at about 1–3 phr, a diamine or blocked-diamine co-curative at about 0.8–2.0 phr, filler at about 15–30 phr, and processing oil at about 5–10 phr to produce a thermally stable elastomer with low compression set and long uncured shelf life.
• A phosphonium-based polymer electrolyte concept can use poly(ethylene oxide) at about 60–80 wt% with LiTFSI at about 15–25 wt% and a BTPB-derived component at about 5–15 wt% plus a nanofiller at about 2–5 wt%, positioning the phosphonium component as a plasticizer/conductivity enhancer.
• A Zn–Br flow battery electrolyte can set zinc bromide at about 2.5–3.5 M with a BTPB-based deep-eutectic or related phosphonium system at about 0.5–2.0 M, plus hydrobromic acid at about 0.1–0.5 M and an organic complexing agent at about 0.05–0.2 M to improve bromine management and cycling stability.
• An electrochemical supporting-electrolyte solution can use BTPB at about 0.1–0.5 M in acetonitrile or propylene carbonate with common electrode configurations (glassy carbon/platinum working electrode and platinum counter electrode) to provide stable ionic conductivity for electroorganic synthesis or electrodeposition.
• An acidic corrosion inhibition system can dose a BTPB-based inhibitor at about 100–500 ppm in 1 M HCl (or about 50–200 ppm in 0.5 M H₂SO₄) to form an adsorbed protective film and reduce corrosion rate, optionally combined with a low-level surfactant additive for synergy.
• A disperse dyeing bath for polyester can apply BTPB at about 0.1–0.5 g/L at about 130–140°C and pH about 4.5–5.5 to improve dye dispersion and penetration during dyeing.
• An enzymatic desizing process for cotton can use BTPB at about 0.05–0.2% on weight of fabric at about 50–70°C and pH about 6.5–7.5 to support desizing efficiency and process consistency.
• A reactive-dye printing paste can include BTPB at about 0.2–0.8% to improve color yield and pattern definition while maintaining workable rheology for printing.
• A heavy-metal/precious-metal removal concept can use BTPB at about 0.1–1.0 mM (with pH about 2–6) to form ion-association complexes for transfer and recovery, targeting high recovery efficiency in separation workflows.
• An industrial wastewater treatment program can dose BTPB at about 5–50 ppm as a coagulation/flocculation aid at about pH 6–9 to support clarification and suspended-solids removal.
• A herbicide emulsifiable concentrate can include a BTPB-derived component at about 1–5% as an emulsifier/stabilizer in a solvent blend such as xylene/butanol to maintain emulsion stability and storage robustness.
• A controlled-release fertilizer coating concept can use a BTPB-derived component at about 0.5–2.0% as part of a coating formulation intended to slow nutrient release and improve delivery control.
• A storage and handling program can keep BTPB sealed in a cool, dry, well-ventilated area with moisture protection and segregation from oxidizing agents, using appropriate PPE and dust-control measures to support safe routine handling.

포장

• Supplied in customer-specified packaging according to project and shipping requirements.
• Options include sealed drums, lined fiber containers, or other export-compliant packaging formats.