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Stains, Fluorescent Dyes & Histology Reagents

Acid red 33

Available on request

Acid red 33 (CAS 3567-66-6) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000448.

Pack sizes
Acid red 33 chemical structure
CAS number3567-66-6
FormulaC16H11N3Na2O7S2
Molar mass467.4 g/mol
Physical formSolid
HS code32041213
InChIKeyLQJVOKWHGUAUHK-UHFFFAOYSA-L
IUPAC namedisodium;5-amino-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate

About Acid red 33

Acid red 33 sits in our stains, Fluorescent Dyes & Histology Reagents section and ships worldwide from stock or short lead time. Identity at a glance: CAS 3567-66-6, formula C16H11N3Na2O7S2 and molar mass 467.4 g/mol. Expect solid.

Common uses in the lab and plant

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Dyes & pigments manufacture

Handling and storage

It carries the GHS signal word Warning (H319 and H412), so wear gloves and eye protection and work with good ventilation.

Standard pack sizes are 25 g and 100 g, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Dyes & pigments manufacture

Applications

Diagnostics, Life Science and BiotechResearch Labs and UniversitiesTextiles, Dyes and Leather

Specifications and identifiers

Specifications of Acid red 33
Product nameAcid red 33
Catalogue numberZX-000448
CAS number3567-66-6
IUPAC namedisodium;5-amino-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate
Molecular formulaC16H11N3Na2O7S2
Molar mass467.4 g/mol
Exact mass466.9834
Physical formSolid
AppearanceSolid
H-bond donors / acceptors2 / 10
Topological polar surface area202 Ų
HS code32041213
InChIKeyLQJVOKWHGUAUHK-UHFFFAOYSA-L
SMILESC1=CC=C(C=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N)O.[Na+].[Na+]
PubChem CID19116
Synonyms5-Amino-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonic acid disodium salt, Acid Red 33 disodium salt, Disodium 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonate, Food Red 12, Azo fuchsine, D&C Red 33, Azo grenadine, C.I. Acid Red 33, disodium salt, Acid fuchsine D, Redusol Z, Azo magenta G, Certicol Red B

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

  • H319Causes serious eye irritation
  • H412Harmful to aquatic life with long lasting effects

Precautionary statements P264 + P265, P273, P280, P305 + P351 + P338, P337 + P317, 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 Acid red 33
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 Acid red 33

Which CAS number identifies Acid red 33?
Acid red 33 is registered under CAS 3567-66-6. You may also see it listed as 5-Amino-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonic acid disodium salt, Acid Red 33 disodium salt, Disodium 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonate. Our catalogue number for this item is ZX-000448.
What are the formula and molar mass of Acid red 33?
For Acid red 33, its formula is C16H11N3Na2O7S2 and its molar mass is 467.4 g/mol. InChIKey LQJVOKWHGUAUHK-UHFFFAOYSA-L lets you match it in any structure database.
What grade and pack sizes are available for Acid red 33?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 25 g, 100 g. Larger quantities and custom packing can be quoted on request.
Which documents come with Acid red 33?
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 Acid red 33 to my country?
Yes. Because Acid red 33 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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