1-Nitroso-2-naphthol, GR 99%+

Name: 1-Nitroso-2-naphthol, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-010117

About 1-Nitroso-2-naphthol, GR 99%+

Listed under CAS 131-91-9, 1-Nitroso-2-naphthol is a phenolic building block available from Vaqora Chemicals in AR grade, specified at ≥99% purity. The compound has the formula C10H7NO2, corresponding to a molecular weight of 173.17 g/mol. Systematically, it is named 1-nitrosonaphthalen-2-ol. Common synonyms include 2-Naphthalenol, 1-nitroso- and Nitroso-beta-naphthol.

In its supplied form it is a brown to dark brown powder. Key physical data: a melting point of 106-108 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span organic synthesis and API synthesis. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Available in 10 g, 25 g, 100 g and 1 kg packs, 1-Nitroso-2-naphthol is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	1-Nitroso-2-naphthol, GR 99%+
Catalogue No.	VQ-010117
CAS Number	131-91-9
IUPAC name	1-nitrosonaphthalen-2-ol
Molecular formula	C₁₀H₇NO₂
Molecular weight	173.17 g/mol
Exact mass	173.0477
Grade	AR
Purity / assay	≥99%
HSN code	29089990
InChIKey	YXAOOTNFFAQIPZ-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C=CC(=C2N=O)O
PubChem CID	8580

Physical properties
Physical form	Powder
Appearance	Brown to dark brown powder
Melting point	106-108 °C
LogP (XLogP3)	2.3
H-bond donors / acceptors	1 / 3
TPSA	49.7 Å²
Synonyms	2-Naphthalenol, 1-nitroso-, Nitroso-beta-naphthol, 2-Naphthol, 1-nitroso-, Zelen moridlova 4, 1-Nitroso-2-naftol, 1-(hydroxyimino)naphthalen-2(1H)-one, alpha-Nitroso-beta-naphthol, 1,2-Naphthalenedione, 1-oxime, Nitroso-.beta.-naphthol, (E)-1-(hydroxyimino)naphthalen-2(1H)-one, .alpha.-Nitroso-.beta.-naphthol, (1E)-1-(hydroxyimino)naphthalen-2(1H)-one

Safety & hazard information (GHS)

Harmful / irritant

Environmental hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life

Precautionary statements: P261, P264, P264 + P265, P270, P271, P273, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P391, 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

Other grades of CAS 131-91-9

Synthesis

1-Nitroso-2-naphthol, 97%

CAS: 131-91-9
Formula: C₁₀H₇NO₂
MW: 173.17 g/mol

VQ-010116

Frequently asked questions

What is the CAS number of 1-Nitroso-2-naphthol, GR 99%+?

The CAS Registry Number of 1-Nitroso-2-naphthol, GR 99%+ is 131-91-9. It is also known as 2-Naphthalenol, 1-nitroso-, Nitroso-beta-naphthol, 2-Naphthol, 1-nitroso-.

What is the molecular formula and molecular weight of 1-Nitroso-2-naphthol, GR 99%+?

1-Nitroso-2-naphthol, GR 99%+ has the molecular formula C10H7NO2 and a molecular weight of 173.17 g/mol. Its IUPAC name is 1-nitrosonaphthalen-2-ol.

Which grade and pack sizes of 1-Nitroso-2-naphthol, GR 99%+ can I order?

We supply 1-Nitroso-2-naphthol, GR 99%+ in AR (≥99%) grade, in 10 g, 25 g, 100 g, 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Nitroso-2-naphthol, GR 99%+?

Yes. Every lot of 1-Nitroso-2-naphthol, GR 99%+ 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 1-Nitroso-2-naphthol, GR 99%+ be shipped internationally?

Yes. 1-Nitroso-2-naphthol, GR 99%+ 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.