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Tropeolin OO, indicator

Available on request

Tropeolin OO, indicator (CAS 554-73-4) supplier Zemixal: C18H14N3NaO3S, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-000421.

Pack sizes
Tropeolin OO, indicator chemical structure
CAS number554-73-4
FormulaC18H14N3NaO3S
Molar mass375.4 g/mol
Physical formPowder
HS code32129090
InChIKeyMLVYOYVMOZFHIU-UHFFFAOYSA-M
IUPAC namesodium 4-[(4-anilinophenyl)diazenyl]benzenesulfonate

About Tropeolin OO, indicator

Researchers and plant chemists source Tropeolin OO, indicator from Zemixal for routine and specialised work. Identity at a glance: CAS 554-73-4, formula C18H14N3NaO3S and molar mass 375.4 g/mol. Typical appearance is brown to orange powder.

Where it is used

  • Titration end-point detection
  • pH determination
  • Analytical testing
  • Indicator for titrations

Storage and safety notes

Solubility: soluble in water. It carries the GHS signal word Warning (H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Order it in 25 g, 100 g, 1 kg and 25 kg packs or ask for a bulk quotation. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.

Typical uses

  • Titration end-point detection
  • pH determination
  • Analytical testing
  • Indicator for titrations

Applications

Specifications and identifiers

Specifications of Tropeolin OO, indicator
Product nameTropeolin OO, indicator
Catalogue numberZX-000421
CAS number554-73-4
IUPAC namesodium 4-[(4-anilinophenyl)diazenyl]benzenesulfonate
Molecular formulaC18H14N3NaO3S
Molar mass375.4 g/mol
Exact mass375.0654
Physical formPowder
AppearanceBrown to orange powder
SolubilitySoluble in water
H-bond donors / acceptors1 / 6
Topological polar surface area102 Ų
HS code32129090
InChIKeyMLVYOYVMOZFHIU-UHFFFAOYSA-M
SMILESC1=CC=C(C=C1)NC2=CC=C(C=C2)N=NC3=CC=C(C=C3)S(=O)(=O)[O-].[Na+]
PubChem CID23668839
Synonyms4-[(4-Anilinophenyl)azo]benzenesulfonic acid sodium salt, Orange IV, Tropaeolin OO, Acid Orange 5, Diphenylamine Orange, C.I. Acid Orange 5, Orange GS, Tropaeolin, Orange N, Solar Orange IV, Acid Yellow D, Orange 4 Lake

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 Tropeolin OO, indicator
25 gQuoted on request
100 gQuoted on request
1 kgQuoted on request
25 kgQuoted on request

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

Questions about Tropeolin OO, indicator

Which CAS number identifies Tropeolin OO, indicator?
Tropeolin OO, indicator is registered under CAS 554-73-4. You may also see it listed as 4-[(4-Anilinophenyl)azo]benzenesulfonic acid sodium salt, Orange IV, Tropaeolin OO. Our catalogue number for this item is ZX-000421.
What are the formula and molar mass of Tropeolin OO, indicator?
For Tropeolin OO, indicator, its formula is C18H14N3NaO3S and its molar mass is 375.4 g/mol. The systematic (IUPAC) name is sodium 4-[(4-anilinophenyl)diazenyl]benzenesulfonate. InChIKey MLVYOYVMOZFHIU-UHFFFAOYSA-M lets you match it in any structure database.
What grade and pack sizes are available for Tropeolin OO, indicator?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 25 g, 100 g, 1 kg, 25 kg. Larger quantities and custom packing can be quoted on request.
Which documents come with Tropeolin OO, indicator?
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 Tropeolin OO, indicator to my country?
Yes. Because Tropeolin OO, indicator 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.
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