Phenol red, GR

Name: Phenol red, GR
Brand: Vaqora Chemicals
SKU: VQ-000682

About Phenol red, GR

Phenol red (CAS 143-74-8) is a biological stain offered by Vaqora Chemicals in AR grade. Formula C19H14O5S, molecular weight 354.4 g/mol. Systematically, it is named 4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol. It is also known as Phenolsulfonphthalein or Fenolipuna.

The material typically appears as a reddish powder. Reported physical data include a melting point of above 300 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Key uses span histology and cytology staining, microscopy, clinical laboratories and cell and microbial culture. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Phenol red in 5 g, 25 g, 100 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Cell & microbial culture

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Phenol red, GR
Catalogue No.	VQ-000682
CAS Number	143-74-8
IUPAC name	4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol
Molecular formula	C₁₉H₁₄O₅S
Molecular weight	354.4 g/mol
Exact mass	354.0562
Grade	AR
HSN code	32049000
InChIKey	BELBBZDIHDAJOR-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O
PubChem CID	4766

Physical properties
Physical form	Powder
Appearance	Reddish powder
Melting point	>300 °C
LogP (XLogP3)	3
H-bond donors / acceptors	2 / 5
TPSA	92.2 Å²
Synonyms	Phenolsulfonphthalein, Fenolipuna, Sulfonphthal, Sulphonthal, PSP (indicator), Phenolsulphonphthalein, Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis-, (S,S-dioxide), 3,3-bis(4-hydroxyphenyl)-3H-2,1??-benzoxathiole-1,1-dione, 2-(Bis(4-hydroxyphenyl)methyliumyl)benzenesulfonate, Sulphental, 3,3-Bis(4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, Phenolsulfonephthalein

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 143-74-8

Practical

Phenol red, practical grade

CAS: 143-74-8
Formula: C₁₉H₁₄O₅S
MW: 354.4 g/mol

VQ-045723

Phenol red, solution

CAS: 143-74-8
Formula: C₁₉H₁₄O₅S
MW: 354.4 g/mol

VQ-003626

Frequently asked questions

What is the CAS number of Phenol red, GR?

The CAS Registry Number of Phenol red, GR is 143-74-8. It is also known as Phenolsulfonphthalein, Fenolipuna, Sulfonphthal.

What is the molecular formula and molecular weight of Phenol red, GR?

Phenol red, GR has the molecular formula C19H14O5S and a molecular weight of 354.4 g/mol. Its IUPAC name is 4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol.

Which grade and pack sizes of Phenol red, GR can I order?

We supply Phenol red, GR in AR grade, in 5 g, 25 g, 100 g, 1 kg, 5 x 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Phenol red, GR?

Yes. Every lot of Phenol red, GR 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 Phenol red, GR be shipped internationally?

Yes. Phenol red, GR 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.