Description

Phosphorus Tribromide is a versatile and highly reactive inorganic reagent essential for bromination and chemical synthesis. Its primary value lies in its powerful ability to convert alcohols and carboxylic acids into alkyl and acyl bromides, respectively, serving as a critical building block in complex molecule construction. This compound is indispensable for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where precise bromination is required. Our supply of Phosphorus Tribromide CAS NO 7789-60-8 is characterized by high purity and reliable consistency to meet stringent industrial demands.

Application

• Key reagent for the bromination of alcohols to produce alkyl bromides.
• Essential in the synthesis of acyl bromides from carboxylic acids for further derivatization.
• Used as a catalyst and reactant in the manufacture of pharmaceutical intermediates, including active pharmaceutical ingredients (APIs).
• Important precursor in agrochemical synthesis for producing herbicides, pesticides, and fungicides.
• Employed in organic synthesis for introducing bromine atoms into complex molecular frameworks.
• Used in laboratories for analytical chemistry and research-scale chemical transformations.
• Involved in the production of flame retardants and other specialty chemicals.
• Acts as a dehydrating agent in specific organic synthesis pathways.

Basic Information

Product Name	Phosphorus Tribromide
CAS No.	7789-60-8
Molecular Formula	PBr3
Molecular Weight	270.69 g/mol
Synonyms	Phosphorus(III) Bromide; Tribromophosphine; Phosphorous Tribromide; Phosphorus Bromide; Bromophosphorus; PBr3; Phosphorus Bromide (PBr3)
EINECS	232-178-2

Quality Control

Our Phosphorus Tribromide is manufactured under strict quality control protocols to ensure high purity and batch-to-batch consistency. Each lot undergoes comprehensive analytical testing, including assay and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements and support your quality management systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as water, strong bases, and oxidizing agents. Due to its highly volatile and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (PBr3)	≥ 99.0%
Free Bromine (Br2)	≤ 0.5%
Phosphorus Oxychloride (POCI3)	≤ 0.1%
Water (Karl Fischer)	≤ 0.05%
Density at 20°C	~2.85 g/mL
Boiling Point	~173°C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.