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Stains, Fluorescent Dyes & Histology Reagents

p-Hydroxy azobenzene

Available on request

p-Hydroxy azobenzene (CAS 1689-82-3) supplier Zemixal: C12H10N2O, COA and SDS with every lot, worldwide shipping. Packs from 25 g.

Pack sizes
p-Hydroxy azobenzene chemical structure
CAS number1689-82-3
FormulaC12H10N2O
Molar mass198.22 g/mol
Physical formSolid
HS code29270090
Purity98%
InChIKeyBEYOBVMPDRKTNR-UHFFFAOYSA-N
IUPAC name4-phenyldiazenylphenol

About p-Hydroxy azobenzene

Researchers and plant chemists source p-Hydroxy azobenzene from Zemixal for routine and specialised work. Key data (98%): CAS 1689-82-3, formula C12H10N2O and molar mass 198.22 g/mol. Expect solid.

Typical applications

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Polymer & resin production

Handling and storage

Reported physical data: melting point 150-152 °C. Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Available as 25 g and 100 g. Larger or split packs can be arranged. Every shipment includes a batch certificate of analysis and a 16-section SDS. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Typical uses

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Polymer & resin production

Applications

Specifications and identifiers

Specifications of p-Hydroxy azobenzene
Product namep-Hydroxy azobenzene
Catalogue numberZX-000674
CAS number1689-82-3
IUPAC name4-phenyldiazenylphenol
Molecular formulaC12H10N2O
Molar mass198.22 g/mol
Exact mass198.0793
Purity / assay98%
Physical formSolid
AppearanceSolid
Melting point150-152 °C
XLogP33.7
H-bond donors / acceptors1 / 3
Topological polar surface area45 Ų
HS code29270090
InChIKeyBEYOBVMPDRKTNR-UHFFFAOYSA-N
SMILESC1=CC=C(C=C1)N=NC2=CC=C(C=C2)O
PubChem CID15529
Synonyms4-Phenylazophenol, Solvent Yellow 7, 4-hydroxyazobenzene, 4-(Phenylazo)phenol, p-Phenylazophenol, p-Hydroxyazobenzene, C.I. Solvent Yellow 7, Pirocard Green 491, Organol Yellow AP, Phenol, p-(phenylazo)-, p-Benzeneazophenol, Azobenzene, 4-hydroxy-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of p-Hydroxy azobenzene
25 gQuoted on request
100 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about p-Hydroxy azobenzene

Which CAS number identifies p-Hydroxy azobenzene?
p-Hydroxy azobenzene is registered under CAS 1689-82-3. You may also see it listed as 4-Phenylazophenol, Solvent Yellow 7, 4-hydroxyazobenzene. Our catalogue number for this item is ZX-000674.
What are the formula and molar mass of p-Hydroxy azobenzene?
For p-Hydroxy azobenzene, its formula is C12H10N2O and its molar mass is 198.22 g/mol. The systematic (IUPAC) name is 4-phenyldiazenylphenol. InChIKey BEYOBVMPDRKTNR-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for p-Hydroxy azobenzene?
This listing is 98% purity. Standard packs are 25 g, 100 g. Larger quantities and custom packing can be quoted on request.
Which documents come with p-Hydroxy azobenzene?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship p-Hydroxy azobenzene to my country?
Yes. Because p-Hydroxy azobenzene is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.
Oracet blue B
CAS
12769-16-3
Formula
C21H16N2O2
MW
328.4 g/mol
ZX-000670

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