Sudan II, 90%

Name: Sudan II, 90%
Brand: Vaqora Chemicals
SKU: VQ-009918

About Sudan II, 90%

Sudan II (CAS 3118-97-6) is a nitrogen-functional building block offered by Vaqora Chemicals, specified at 90% purity. With the molecular formula C18H16N2O, it has a molar mass of 276.3 g/mol. Systematically, it is named 1-[(2,4-dimethylphenyl)diazenyl]naphthalen-2-ol. It is also known as 1-(2,4-Xylylazo)-2-naphthol or Solvent Orange 7.

The material typically appears as an orange to red powder. Literature values give a melting point of 156-158 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Typical applications include organic synthesis, dye and pigment intermediates and heterocycle construction. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Sudan II in 10 g, 25 g and 100 g packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
Dye & pigment intermediates
Heterocycle construction

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sudan II, 90%
Catalogue No.	VQ-009918
CAS Number	3118-97-6
IUPAC name	1-[(2,4-dimethylphenyl)diazenyl]naphthalen-2-ol
Molecular formula	C₁₈H₁₆N₂O
Molecular weight	276.3 g/mol
Exact mass	276.1263
Purity / assay	90%
HSN code	29420090
InChIKey	JBTHDAVBDKKSRW-UHFFFAOYSA-N
SMILES	CC1=CC(=C(C=C1)N=NC2=C(C=CC3=CC=CC=C32)O)C
PubChem CID	18386

Physical properties
Physical form	Powder
Appearance	Orange to red powder
Melting point	156-158 °C
LogP (XLogP3)	5.3
H-bond donors / acceptors	1 / 3
TPSA	45 Å²
Synonyms	1-(2,4-Xylylazo)-2-naphthol, Solvent Orange 7, Sudan red, Ceres Orange RR, Fat Scarlet 2G, Sudan Red II, Fettorange B, Pyronalrot R, Sudan Orange, Sudan ax, Motirot G, Cerotinscharlach G

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Sudan II, 90%?

The CAS Registry Number of Sudan II, 90% is 3118-97-6. It is also known as 1-(2,4-Xylylazo)-2-naphthol, Solvent Orange 7, Sudan red.

What is the molecular formula and molecular weight of Sudan II, 90%?

Sudan II, 90% has the molecular formula C18H16N2O and a molecular weight of 276.3 g/mol. Its IUPAC name is 1-[(2,4-dimethylphenyl)diazenyl]naphthalen-2-ol.

Which grade and pack sizes of Sudan II, 90% can I order?

We supply Sudan II, 90% in (90%) grade, in 10 g, 25 g, 100 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sudan II, 90%?

Yes. Every lot of Sudan II, 90% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Sudan II, 90% be shipped internationally?

Yes. Sudan II, 90% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.