Description
DL-2-Bromopropionic acid, identified by CAS 598-72-1, is a clear colorless to yellowish liquid after melting. It is soluble in water and miscible with alcohol, ether, chloroform, and benzene. With a molecular formula of C₃H₅BrO₂ and a molecular weight of 152.97 g/mol, this compound is a key intermediate in pharmaceutical and agrochemical synthesis. Its reactivity makes it valuable for producing complex molecules in research and industrial applications.
Properties
The following table details the physical and chemical properties of DL-2-Bromopropionic acid, compiled from trusted chemical suppliers:
Property
Value
Molecular Formula
C₃H₅BrO₂
Molecular Weight
152.97 g/mol
CAS Number
598-72-1 Melting Point
25.7°C
Boiling Point
203 °C
Density
1.7 g/mL at 25 °C
Refractive Index
n20/D 1.475
Flash Point
212 °F (100 °C)
pKa
pK1: 2.971 (25°C)
Form
Liquid after melting
Specific Gravity
1.7 Color
Clear colorless to yellow
Water Solubility
Soluble
Dielectric Constant
11.0 Usage
DL-2-Bromopropionic acid is a versatile chemical with applications in multiple industries:
Pharmaceutical Synthesis: It serves as an intermediate in producing pharmaceutical compounds, such as alanine, a key amino acid used in drug development.
Agrochemical Production: The compound is used to synthesize herbicides like quizalofop-ethyl, napropamide, and fenthiaprop, as well as fungicides such as metalaxyl, benalaxyl, and procymidone.
Organic Synthesis: It acts as an alkylation agent for mercaptans and sulfur-containing compounds and is employed in emulsion polymerization to prepare reversible addition-fragmentation chain transfer (RAFT) agents for advanced chemical reactions.
These applications highlight its role in supporting pharmaceutical innovation and agricultural advancements.
Packaging and Transportation
DL-2-Bromopropionic acid is classified as a Dangerous Good for transport, with the following specifications:
RIDADR: UN 3265 8/PG 2
Hazard Class: 8
Packing Group: II
HS Code: 29159080
It is packaged in chemically resistant containers to ensure stability and safety. Transportation must adhere to hazardous materials regulations, including proper labeling and secure packaging, to prevent leaks or reactions during shipping.
Storage
DL-2-Bromopropionic acid should be stored at room temperature in a well-ventilated, cool, and dark environment, ideally below 15°C, to maintain stability. It must be kept away from incompatible materials, such as strong oxidizers, to avoid hazardous reactions.
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