N719

Synonym(s):N-719 dye

CAS NO.：207347-46-4
Empirical Formula: 2C16H36N.2C12H7N2O4.C2N2RuS2
Molecular Weight: 1188.57
MDL number: MFCD11042475
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:16:22

What is N719?

Description

Di-tetrabutylammonium cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II), N719 dye, is the ammonium salt of N3 dye.?With changes to increase cell voltage and solubility in polar solvents comparing with N3 dye, N719 dye is also one of the most common high performance dyes that are developed for DSSC solar cells.

The Uses of N719

N-719 dye is widely used as a sensitizer that can be coated on indium tin oxide (ITO) substrates by doctor blade technique, with different photoanode materials like titanium oxide (TiO₂), zinc oxide (ZnO), and gold nanourchin for dye sensitized solar cell (DSSC) applications.

General Description

Di-tetrabutylammonium?cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II) (N-719 dye) is a ruthenium based polypyridyl mixture used as a photosensitizer. It acts as a medium for effective absorption of photons and transfer of electrons within the electrolytic solar cells.

Properties of N719

Melting point:	250-260°C
storage temp.	under inert gas (nitrogen or Argon) at 2–8 °C
form	Solid
color	Black
Stability:	Light Sensitive
CAS DataBase Reference	207347-46-4
solubility	Ethanol or acetonitrile/tert-butanol (1:1, v:v)

Safety information for N719

Signal word	Danger
Pictogram(s)	Health Hazard GHS08
GHS Hazard Statements	H334:Sensitisation, respiratory
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P342+P311:IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.