Chlorophenol red

Name: Chlorophenol red
Brand: Vaqora Chemicals
SKU: VQ-045645

About Chlorophenol red

Chlorophenol red (CAS 4430-20-0) is a biological stain offered by Vaqora Chemicals. The compound has the formula C19H12Cl2O5S, corresponding to a molecular weight of 423.3 g/mol. Systematically, it is named 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol. It is also known as Chlorphenol Red or Chlorphenolsulfonphthalein.

Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. Our customers for this product work in academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Standard pack sizes are 5 g and 25 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Chlorophenol red
Catalogue No.	VQ-045645
CAS Number	4430-20-0
IUPAC name	2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol
Molecular formula	C₁₉H₁₂Cl₂O₅S
Molecular weight	423.3 g/mol
Exact mass	421.9783
HSN code	29349900
InChIKey	WWAABJGNHFGXSJ-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C=C3)O)Cl)C4=CC(=C(C=C4)O)Cl
PubChem CID	20486

Physical properties
Physical form	Other
LogP (XLogP3)	4.3
H-bond donors / acceptors	2 / 5
TPSA	92.2 Å²
Synonyms	Chlorphenol Red, Chlorphenolsulfonphthalein, Dichlorophenolsulfonephthalein, 3',3''-Dichlorophenolsulfonphthalein, 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1$l^(6)-benzoxathiole-1,1-dione, 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1$l^{6}-benzoxathiole-1,1-dione, Chlorophenol red indicator, 3,3-Bis(3-chloro-4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide

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 4430-20-0

AR

Chlorophenol red, GR

CAS: 4430-20-0
Formula: C₁₉H₁₂Cl₂O₅S
MW: 423.3 g/mol

VQ-000533

Frequently asked questions

What is the CAS number of Chlorophenol red?

The CAS Registry Number of Chlorophenol red is 4430-20-0. It is also known as Chlorphenol Red, Chlorphenolsulfonphthalein, Dichlorophenolsulfonephthalein.

What is the molecular formula and molecular weight of Chlorophenol red?

Chlorophenol red has the molecular formula C19H12Cl2O5S and a molecular weight of 423.3 g/mol. Its IUPAC name is 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol.

Which grade and pack sizes of Chlorophenol red can I order?

We supply Chlorophenol red, in 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Chlorophenol red?

Yes. Every lot of Chlorophenol red 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 Chlorophenol red be shipped internationally?

Yes. Chlorophenol red 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.