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Stains, Fluorescent Dyes & Histology Reagents

Thymolphthalein, GR

ARAvailable on request

Thymolphthalein, GR (CAS 125-20-2) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000723.

Pack sizes
Thymolphthalein, GR chemical structure
CAS number125-20-2
FormulaC28H30O4
Molar mass430.5 g/mol
Physical formPowder
HS code29322090
InChIKeyLDKDGDIWEUUXSH-UHFFFAOYSA-N
IUPAC name3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one

About Thymolphthalein, GR

Thymolphthalein, GR is part of the Zemixal stains, Fluorescent Dyes & Histology Reagents range. Identity at a glance (AR): CAS 125-20-2, formula C28H30O4 and molar mass 430.5 g/mol. It is described as white to orange to brown powder.

Typical applications

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Indicator for titrations

Handling and storage

Physical constants on file: melting point 248-254 °C. It carries the GHS signal word Danger (H341, H350 and H361), so wear gloves and eye protection and work with good ventilation.

Standard pack sizes are 5 g, 25 g, 100 g and 5 x 1 kg, and custom quantities are quoted on request. Each lot travels with 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
  • Indicator for titrations

Applications

Grade guides

Specifications and identifiers

Specifications of Thymolphthalein, GR
Product nameThymolphthalein, GR
Catalogue numberZX-000723
CAS number125-20-2
IUPAC name3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one
Molecular formulaC28H30O4
Molar mass430.5 g/mol
Exact mass430.2144
GradeAR
Physical formPowder
AppearanceWhite to orange to brown powder
Melting point248-254 °C
XLogP36.8
H-bond donors / acceptors2 / 4
Topological polar surface area66.8 Ų
HS code29322090
InChIKeyLDKDGDIWEUUXSH-UHFFFAOYSA-N
SMILESCC1=CC(=C(C=C1C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4C)O)C(C)C)C(C)C)O
PubChem CID31316
Synonyms5',5''-Diisopropyl-2',2''-dimethylphenolphthalein, Thymophthalein, 1(3H)-Isobenzofuranone, 3,3-bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-, Phenolphthalein, 5',5''-diisopropyl-2',2''-dimethyl-, 3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-2-methyl-5-(1-methylethyl)phenyl)-, 3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)isobenzofuran-1(3H)-one, 3,3-Bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-1(3H)-isobenzofuranone, 3,3-bis(4-hydroxy-5-isopropyl-2-methyl-phenyl)isobenzofuran-1-one, 3,3-bis[4-hydroxy-2-methyl-5-(propan-2-yl)phenyl]-2-benzofuran-1(3H)-one, 3,3-bis[4-hydroxy-2-methyl-5-(methylethyl)phenyl]-3-hydroisobenzofuran-1-one, thymolphthaleine

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

Safety and GHS hazards

GHS08 Health hazard
Health hazard

Signal word Danger

  • H341Suspected of causing genetic defects
  • H350May cause cancer
  • H361Suspected of damaging fertility or the unborn child

Precautionary statements P203, P280, P318, 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 Thymolphthalein, GR
5 gQuoted on request
25 gQuoted on request
100 gQuoted on request
5 x 1 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 Thymolphthalein, GR

Which CAS number identifies Thymolphthalein, GR?
Thymolphthalein, GR is registered under CAS 125-20-2. You may also see it listed as 5',5''-Diisopropyl-2',2''-dimethylphenolphthalein, Thymophthalein, 1(3H)-Isobenzofuranone, 3,3-bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-. Our catalogue number for this item is ZX-000723.
What are the formula and molar mass of Thymolphthalein, GR?
For Thymolphthalein, GR, its formula is C28H30O4 and its molar mass is 430.5 g/mol. The systematic (IUPAC) name is 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one. InChIKey LDKDGDIWEUUXSH-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Thymolphthalein, GR?
This listing is AR grade. Standard packs are 5 g, 25 g, 100 g, 5 x 1 kg. Larger quantities and custom packing can be quoted on request.
Which documents come with Thymolphthalein, GR?
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 Thymolphthalein, GR to my country?
Yes. Because Thymolphthalein, GR 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.

Other grades with CAS 125-20-2

Titan yellow
CAS
1829-00-1
Formula
C28H21N5NaO6S4
MW
674.8 g/mol
ZX-000725

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