Agent Name

2,5-Norbornadiene

Alternative Name

Bicyclo(2.2.1)hepta-2,5-diene

CAS Number

121-46-0

Formula

C7-H8

Major Category

Other Classes

Synonyms

Bicyclo(2.2.1)heptadiene; 8,9,10-Trinorborna-2,5-diene; Bicyclo(2.2.1)hepta-2,5-diene; Norbornadiene; [ChemIDplus] Bicycloheptadiene; Bicyclo[2.2.1]hepta-2,5-diene, inhibited; Dicycloheptadiene; 3,6-Methano-1,4-cyclohexadiene; 2,5-Norbornadiene, inhibited; [CAMEO] UN2251

Category

Aliphatics, Unsaturated

Description

Liquid with a foul odor; [Merck Index] Colorless liquid; [CAMEO]

Sources/Uses

Used to make synthetic rubber; [ChemIDplus] Used in organic, organometallic, and petrochemical synthesis; Used as an intermediate for aldrin; [Merck Index]

Comments

May polymerize; May cause skin, eye, and mucous membrane irritation; [CAMEO] Stabilized with BHT (butylated hydroxytoluene, CAS# 128-37-0); An irritant; [Alfa Aesar MSDS] See "2-Norbornene."

Exposure Assessment
Vapor Pressure

25.5 mm Hg

Lethal Concentration

LC50 (rat) = 14,100 ppm/8hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "2,5-Norbornadiene, stabilized."

Flammability (NFPA)

3: May ignite at ambient temperature

Links to Other NLM Databases
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