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4-Nitrophthalonitrile

CAS No.
31643-49-9
Chemical Name:
4-Nitrophthalonitrile
Synonyms
4-NITROPHTHALONITRILE;4-NITROPHTALONITRILE;4NPN;4-nitro phthalic nitrile;ROXA-012;RSYY(Avanafil)-57;TIMTEC-BB SBB008410;4-nitro-phthalonitril;p-nitrophthalonitrile;Febuxostat Impurity 11
CBNumber:
CB9102334
Molecular Formula:
C8H3N3O2
Molecular Weight:
173.13
MDL Number:
MFCD00040301
MOL File:
31643-49-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-08 10:32:36
Product description Number Pack Size Price
4-Nitrophthalonitrile 99% 330590 5g $174
4-Nitrophthalonitrile >98.0%(GC) N0524 25g $68
4-Nitrophthalonitrile >98.0%(GC) N0524 100g $240
4-Nitrophthalonitrile 98% N47265 5g $13
4-Nitrophthalonitrile 98% N47265 10g $17
More product size

4-Nitrophthalonitrile Properties

Melting point 142-144 °C(lit.)
Boiling point 303.75°C (rough estimate)
Density 1.4553 (rough estimate)
refractive index 1.6500 (estimate)
storage temp. Sealed in dry,Room Temperature
form Crystalline Powder, Crystals and/or Chunks
color Light yellow, light greenish or light gray to beige
Water Solubility Sparingly soluble in water.(0.26 g/L) (25°C),
BRN 1877554
Major Application diagnostic assay manufacturing
hematology
histology
InChI InChI=1S/C8H3N3O2/c9-4-6-1-2-8(11(12)13)3-7(6)5-10/h1-3H
InChIKey NTZMSBAAHBICLE-UHFFFAOYSA-N
SMILES C1(C#N)=CC=C([N+]([O-])=O)C=C1C#N
CAS DataBase Reference 31643-49-9(CAS DataBase Reference)
EWG's Food Scores 1
EPA Substance Registry System 1,2-Benzenedicarbonitrile, 4-nitro- (31643-49-9)
UNSPSC Code 12171500
NACRES NA.47

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P264-P270-P301+P312-P302+P352-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xn
Risk Statements  22-36/37/38-20/21/22
Safety Statements  26-36
WGK Germany  3
RTECS  TI8576000
TSCA  TSCA listed
REACH Registrations Active
HS Code  29269090
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
Toxicity mouse,LD50,oral,500mg/kg (500mg/kg),SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTIONBEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION,Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(9), Pg. 92, 1987.
NFPA 704
1
2 0

4-Nitrophthalonitrile price More Price(39)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 330590 4-Nitrophthalonitrile 99% 31643-49-9 5g $174 2026-04-30 Buy
TCI Chemical N0524 4-Nitrophthalonitrile >98.0%(GC) 31643-49-9 25g $68 2026-04-30 Buy
TCI Chemical N0524 4-Nitrophthalonitrile >98.0%(GC) 31643-49-9 100g $240 2026-04-30 Buy
Synthonix N47265 4-Nitrophthalonitrile 98% 31643-49-9 5g $13 2026-05-06 Buy
Synthonix N47265 4-Nitrophthalonitrile 98% 31643-49-9 10g $17 2026-05-06 Buy
Product number Packaging Price Buy
330590 5g $174 Buy
N0524 25g $68 Buy
N0524 100g $240 Buy
N47265 5g $13 Buy
N47265 10g $17 Buy

4-Nitrophthalonitrile Chemical Properties,Uses,Production

Chemical Properties

light yellow, light greenish or light grey to

Uses

4-Nitrophthalonitrile is a useful chemical in organic synthesis. Dyes and metabolites.

Preparation

Synthesis of 4-Nitrophthalonitrile: SOCl2 (83.5 mL. 1.144 mol) was added dropwise under nitrogen purge to dry DMF (200 mL) which had been cooled to 0-5 °C. The solution was allowed to stir for 15 min at 0-5 °C. The 4-nitrophthalamide (60.1 g, 0.286 mol) was then added and the solution was allowed to slowly warm to room temperature and react for 18 h under nitrogen purge. The solution was then slowly added to ice water to crystallize and precipitate the product. The 4-nitrophthalonitrile was collected using vacuum filtration, washed with ice cold water, and allowed to air dry overnight; yield: 45.2 g (92%); m.p.: 141 °C (det. by DSC)
1 H NMR((CD3)2SO): 8.41 (dd, 1H), 8.67 (dd, 1H), 9.03 (dd, 1H) FTIR: 3091 (m, aromatic C-H stretch), 2242 (d, CN stretch), 1534 (s, asymmetric N=O stretch), 1349 (s, symmetric N=O stretch), 853 (s, C-N stretch)

Synthesis

4-Nitrophthalonitrile synthesized from phthalimide in three steps. The reaction time of ruthenium chloride and HZSM-5 catalysts was very shorter than ammonium molybdate and Hβ catalysts. The yield while we used ruthenium chloride and HZSM-5 catalysts were very higher than another.
Synthesis of 4-Nitrophthalonitrile
In a three necked flask, 70 mL of dry dimethylformamide (DMF) was cooled to 0 °C under a stream of nitrogen and 7.3 mL of thionyl chloride was added so that the internal temperature did not go beyond 5 °C. After addition, nitrogen flow was ceased and a calcium chloride tube was added to the top of flask. Meanwhile, the color of the medium was observed to be yellow. Then, 10 g (0.048 mol) of 4- nitrophthalamide was slowly added so that the internal temperature did not go beyond 5 °C. The mixture was stirred over ice bath for 1 hour. The mixture was stirred at room temperature for 2 hours and then poured over 500 g of ice-water. The precipitate was filtered and washed successively with water, 250 mL 5% sodium hydrogencarbonate solution, and water again and dried in a vacuum oven at 110-120 °C. Molecular formula: C8H3N3O2. Yield: 7.4 g (90%). Mp: 141 °C.

References

[1] Acta Chemica Scandinavica, 1999, vol. 53, # 9, p. 714 - 720
[2] Materials Research Bulletin, 2016, vol. 75, p. 144 - 154
[3] Heterocycles, 1984, vol. 22, # 9, p. 2047 - 2052
[4] Patent: EP413415, 1991, A1
[5] Russian Chemical Bulletin, 2003, vol. 52, # 1, p. 150 - 153

13138-53-9
31643-49-9
Synthesis of 4-Nitrophthalonitrile from 4-Nitrophthaldiamide
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