2-(4-Aminophenyl)-1H-benzimidazol-5-amine

CAS NO.：7621-86-5
Empirical Formula: C13H12N4
Molecular Weight: 224.26
MDL number: MFCD00451475
EINECS: 231-538-6
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:13:46

What is 2-(4-Aminophenyl)-1H-benzimidazol-5-amine?

Description

2-(4-Aminophenyl)-1H-benzimidazol-5-amine (APBIA) is a synthetic raw material for the preparation of sulfonated polyimides containing benzimidazole (SPIBIs). The synthesised SPIBIs with polyhedral oligomeric silsesquioxane glycidyl ethers (G-POSS) can be used to prepare a number of novel organic-inorganic hybrid proton exchange membranes (PEMs). The obtained membranes exhibited good crosslink density at all gel fractions above 75%. The mechanical properties, oxidative stability and hydrolytic stability of the crosslinked membranes were significantly improved compared with those of pure SPIBI membranes.

The Uses of 2-(4-Aminophenyl)-1H-benzimidazol-5-amine

2-(4-Aminophenyl)-1H-benzimidazol-5-amine is a useful as an aerogel lithium battery separator.

Safety Profile

Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of NO_x.

Properties of 2-(4-Aminophenyl)-1H-benzimidazol-5-amine

Melting point:	234.0 to 238.0 °C
Boiling point:	355.66°C (rough estimate)
Density	1.2067 (rough estimate)
refractive index	1.5890 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	DMSO (Slightly), Methanol (Slightly)
form	Solid
pka	11.15±0.10(Predicted)
color	Pale Beige to Pale Brown
λmax	335nm(EtOH)(lit.)
InChI	InChI=1S/C13H12N4/c14-9-3-1-8(2-4-9)13-16-11-6-5-10(15)7-12(11)17-13/h1-7H,14-15H2,(H,16,17)
EPA Substance Registry System	1H-Benzimidazol-5-amine, 2-(4-aminophenyl)- (7621-86-5)

Safety information for 2-(4-Aminophenyl)-1H-benzimidazol-5-amine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Health Hazard GHS08
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H341:Germ cell mutagenicity
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.