Phenolphthalein, GR

Name: Phenolphthalein, GR
Brand: Vaqora Chemicals
SKU: VQ-000683

About Phenolphthalein, GR

Phenolphthalein is a biological stain in AR grade carrying the CAS registry number 77-09-8 with a typical assay of ≥99%. Its molecular formula is C20H14O4 and its molecular weight is 318.3 g/mol. Its systematic (IUPAC) name is 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one. It is also known as Phthalin or Koprol.

In its supplied form it is a white to off-white powder. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Phenolphthalein in 100 g, 500 g, 5 kg and 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Phenolphthalein, GR
Catalogue No.	VQ-000683
CAS Number	77-09-8
IUPAC name	3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
Molecular formula	C₂₀H₁₄O₄
Molecular weight	318.3 g/mol
Exact mass	318.0892
Grade	AR
Purity / assay	≥99%
HSN code	38220090
InChIKey	KJFMBFZCATUALV-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC2(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O
PubChem CID	4764

Physical properties
Physical form	Powder
Appearance	White to off-white powder
LogP (XLogP3)	3.6
H-bond donors / acceptors	2 / 4
TPSA	66.8 Å²
Synonyms	3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone, Phthalin, Koprol, Spulmako-lax, Dihydroxyphthalophenone, Phenolphtaleine, Correctol, Laxin, 3,3-Bis(4-hydroxyphenyl)phthalide, Fenolftalein, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, 3,3-Bis(p-hydroxyphenyl)phthalide

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H341Suspected of causing genetic defects
H350May cause cancer

Precautionary statements: P203, P280, P318, 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 77-09-8

Phenolphthalein, indicator papers

CAS: 77-09-8
Formula: C₂₀H₁₄O₄
MW: 318.3 g/mol

VQ-000403

Phenolphthalein, indicator solution

CAS: 77-09-8
Formula: C₂₀H₁₄O₄
MW: 318.3 g/mol

VQ-003627

Phenolphthalein, indicator, 98%+

CAS: 77-09-8
Formula: C₂₀H₁₄O₄
MW: 318.3 g/mol

VQ-000684

Frequently asked questions

What is the CAS number of Phenolphthalein, GR?

The CAS Registry Number of Phenolphthalein, GR is 77-09-8. It is also known as 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone, Phthalin, Koprol.

What is the molecular formula and molecular weight of Phenolphthalein, GR?

Phenolphthalein, GR has the molecular formula C20H14O4 and a molecular weight of 318.3 g/mol. Its IUPAC name is 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one.

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

We supply Phenolphthalein, GR in AR (≥99%) grade, in 100 g, 500 g, 5 kg, 25 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Phenolphthalein, GR?

Yes. Every lot of Phenolphthalein, 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 Phenolphthalein, GR be shipped internationally?

Yes. Phenolphthalein, 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.