PAR, indicator, ACS ≥90.00%

Name: PAR, indicator, ACS ≥90.00%
Brand: Vaqora Chemicals
SKU: VQ-045603

About PAR, indicator, ACS ≥90.00%

Listed under CAS 16593-81-0, PAR, indicator is a biological stain available from Vaqora Chemicals in ACS / AR grade with a typical assay of ≥90.00%. The compound has the formula C11H10N3NaO3, corresponding to a molecular weight of 255.2 g/mol.

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 histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Vaqora Chemicals supplies PAR, indicator in 1 g and 5 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	PAR, indicator, ACS ≥90.00%
Catalogue No.	VQ-045603
CAS Number	16593-81-0
IUPAC name	sodium;3-hydroxy-4-(pyridin-2-yldiazenyl)phenolate;hydrate
Molecular formula	C₁₁H₁₀N₃NaO₃
Molecular weight	255.2 g/mol
Exact mass	255.062
Grade	ACS / AR
Purity / assay	≥90.00%
HSN code	29333990
InChIKey	KMHFHNVYQMFVAN-UHFFFAOYSA-M
SMILES	C1=CC=NC(=C1)N=NC2=C(C=C(C=C2)[O-])O.O.[Na+]
PubChem CID	135442939

Physical properties
Physical form	Other
H-bond donors / acceptors	2 / 6
TPSA	81.9 Å²
Synonyms	1,3-Benzenediol, 4-(2-pyridinylazo)-, monosodium salt, monohydrate, sodium (E)-3-hydroxy-4-(pyridin-2-yldiazenyl)phenolate hydrate, sodium 3-hydroxy-4-[(1E)-2-(pyridin-2-yl)diazen-1-yl]benzen-1-olate hydrate, 4-(2-pyridylazo) resorcinol monosodium salt hydrate, 4-(2-pyridyldiazenyl)benzene-1,3-diol, sodium salt, hydrate, Sodium 3-oxo-4-[2-(pyridin-2-yl)hydrazinylidene]cyclohexa-1,5-dien-1-olate--water (1/1/1)

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

Other grades of CAS 16593-81-0

Microscopy

PAR, indicator, 99%+

CAS: 16593-81-0
Formula: C₁₁H₁₀N₃NaO₃
MW: 255.2 g/mol

VQ-000677

EP/Ph. Eur. / ACS / AR

PAR, indicator, EP/Ph. Eur., ACS

CAS: 16593-81-0
Formula: C₁₁H₁₀N₃NaO₃
MW: 255.2 g/mol

VQ-047245

Extra Pure

PAR, indicator, extra pure

CAS: 16593-81-0
Formula: C₁₁H₁₀N₃NaO₃
MW: 255.2 g/mol

VQ-045982

Frequently asked questions

What is the CAS number of PAR, indicator, ACS ≥90.00%?

The CAS Registry Number of PAR, indicator, ACS ≥90.00% is 16593-81-0. It is also known as 1,3-Benzenediol, 4-(2-pyridinylazo)-, monosodium salt, monohydrate, sodium (E)-3-hydroxy-4-(pyridin-2-yldiazenyl)phenolate hydrate, sodium 3-hydroxy-4-[(1E)-2-(pyridin-2-yl)diazen-1-yl]benzen-1-olate hydrate.

What is the molecular formula and molecular weight of PAR, indicator, ACS ≥90.00%?

PAR, indicator, ACS ≥90.00% has the molecular formula C11H10N3NaO3 and a molecular weight of 255.2 g/mol.

Which grade and pack sizes of PAR, indicator, ACS ≥90.00% can I order?

We supply PAR, indicator, ACS ≥90.00% in ACS / AR (≥90.00%) grade, in 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with PAR, indicator, ACS ≥90.00%?

Yes. Every lot of PAR, indicator, ACS ≥90.00% 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 PAR, indicator, ACS ≥90.00% be shipped internationally?

Yes. PAR, indicator, ACS ≥90.00% 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.