2-bromobutane (C4H9Br)

2-bromobutane (C4H9Br)

2-bromobutane is a colorless to yellowish liquid with a characteristic odor. It is mainly used as a reagent in organic chemistry to introduce the bromo functional group into organic molecules. 

Common synonyms: sec-Butylbromide

Properties of 2-bromobutane (C4H9Br):

  • Reactivity: 2-bromobutane is a flammable compound and can react violently with certain oxidizing agents. It can also react with strong bases to form halide salts.
  • Melting point: The melting point of 2-bromobutane is around -112°C.
  • Solubility: 2-bromobutane is slightly soluble in water, but soluble in organic solvents such as ethanol and ether.
  • Health risks: 2-bromobutane is toxic if inhaled, swallowed or in contact with the skin. It can cause skin irritation and serious eye damage. Prolonged exposure may cause adverse effects on internal organs.
  • Protection and prevention: It is advisable to handle 2-bromobutane in a well-ventilated environment, and to wear personal protective equipment such as gloves, safety goggles and a respirator. In case of contact with skin or eyes, rinse with plenty of water and seek medical advice if symptoms are severe.

> About these data

Formula C4H9Br
International name 2-bromobutane
French name 2-Bromobutane
CAS 78-76-2
EINECS 208-156-3
Filter ARI
IP (eV) 10,01
Vapour density (air = 1) 4,73
Conversion (1 ppm =) 5.604 mg/m3
LIE -
LSE -
VLEP CT (15mn) -
VLEP (8h) -
STEL (15 min.) -
TWA (8h) -

Gas detectors for 2-bromobutane (C4H9Br)

Despite its noticeable odor, a 2-bromobutane (C4H9Br) gas detector is essential for accurately measuring concentrations of this compound. This volatile organic compound (VOC), with an ionization power (IP) below 10.6 eV, can be accurately detected in ppm.

Ventis® Pro 5 Portable multi gas detector with PASS

Détecteur multigaz portable avec PTI Ventis® Pro5

Ventis® MX6 iBrid® multi gas detector (up to 6 gases)

Détecteur multigaz Ventis® MX6 iBrid® ATEX (jusqu'à 6 gaz)

VOC detector with PID sensor Xam 8000

Détecteur COV à capteur PID X-am 8000

Radius® BZ1 Area monitor

Balise de surveillance de zone Radius® BZ1

CTX300 Analogue Gas Transmitter

Transmetteur gaz analogique CTX300

OLCT100 Fixed Gas Detector

Détecteur de gaz fixe OLCT100

OLCT80 Fixed gas detector

Détecteur de gaz fixe OLCT80

KwikSense PID VOC Detector

Détecteur COV KwikSense PID

Self-contained breathing apparatus for 2-bromobutane (C4H9Br)

2-bromobutane (C4H9Br) is a toxic, asphyxiating gas with a high risk of suffocation, so we recommend an open-circuit breathing apparatus (ARICO), an air-supply system for long-duration operations and a self-rescue mask for emergency evacuations.

R-PAS complete SCBA kit

Appareil respiratoire isolant complet R-PAS

PSS 3000 Self Contained Breathing Apparatus (SCBA)

Appareil respiratoire à circuit ouvert PSS 3000

PSS Airboss firefighter self-contained breathing apparatus

Appareil respiratoire isolant pompiers PSS Airboss

X-plore 9300 supplied air system

Système à adduction d’air X-plore 9300

M20.2 self-rescue mask

Masque auto sauveteur M20.2

Self-rescuers OXY SR30 & OXY SR60

Auto-sauveteurs OXY SR30 & OXY SR60

SK 1203 Escape breathing device

Appareil respiratoire d’évacuation SK 1203

Saver CF emergency SCBA

ARI de secours Saver CF
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