9-Anthraldehyde

Synonym(s):9-Anthraldehyde

CAS NO.：642-31-9
Empirical Formula: C15H10O
Molecular Weight: 206.24
MDL number: MFCD00001254
EINECS: 211-383-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-24 14:59:12

What is 9-Anthraldehyde?

Chemical properties

yellow powder

The Uses of 9-Anthraldehyde

9-Anthraldehyde is used to prepare asymmetrical tridentate Schiff base ligands, 2-(9-anthrylmethyl-ideneamino)-4-methyl-phenol and functionalized ligand like 2-(anthracen-9-ylidene)-4,5-bis(diphenylphosphino)-4-cyclopentene-1,3-dione through Knoevenangel condensation with the diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopentene-1,3-dione. It is also used as an intermediate for dyes, pigment, active pharmaceutical ingredients and other organic compounds. Further, it is involved in the Diels Alder reaction with benzenediazonium-2-carboxylate.

Synthesis Reference(s)

The Journal of Organic Chemistry, 53, p. 4587, 1988 DOI: 10.1021/jo00254a035

General Description

The Diels-Alder reaction of 9-anthracenecarboxaldehyde with benzenediazonium-2-carboxylate was studied.

Purification Methods

9-Anthraldehyde [642-31-9] M 206.2, m 104-105o. Crystallise the aldehyde from acetic acid or EtOH. [Masnori et al. J Am Chem Soc 108 1126 1986, Beilstein 7 IV 1738.]

Properties of 9-Anthraldehyde

Melting point:	103-105 °C (lit.)
Boiling point:	305.09°C (rough estimate)
Density	1.0701 (rough estimate)
refractive index	1.6324 (estimate)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
solubility	Soluble in toluene.
form	Crystalline Powder or Needles
color	Yellow
Sensitive	Air Sensitive
BRN	639167
Stability:	Stable. Incompatible with strong bases, strong oxidizing agents.
CAS DataBase Reference	642-31-9(CAS DataBase Reference)
NIST Chemistry Reference	9-Anthracenecarboxaldehyde(642-31-9)
EPA Substance Registry System	9-Anthracenecarboxaldehyde (642-31-9)

Safety information for 9-Anthraldehyde

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.