4-Chlorophthalic anhydride, 98%

Name: 4-Chlorophthalic anhydride, 98%
Brand: Vaqora Chemicals
SKU: VQ-009102

About 4-Chlorophthalic anhydride, 98%

4-Chlorophthalic anhydride (CAS 118-45-6) is an acylating agent offered by Vaqora Chemicals, specified at 98% purity. The compound has the formula C8H3ClO3, corresponding to a molecular weight of 182.56 g/mol. Its systematic (IUPAC) name is 5-chloro-2-benzofuran-1,3-dione. Common synonyms include 5-chloroisobenzofuran-1,3-dione and 4-chlorophthalic acid anhydride.

It is supplied as white to off-white powder or crystals. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

Key uses span organic synthesis and API synthesis. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 4-Chlorophthalic anhydride in 5 g, 25 g, 100 g and 1 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	4-Chlorophthalic anhydride, 98%
Catalogue No.	VQ-009102
CAS Number	118-45-6
IUPAC name	5-chloro-2-benzofuran-1,3-dione
Molecular formula	C₈H₃ClO₃
Molecular weight	182.56 g/mol
Exact mass	181.9771
Purity / assay	98%
HSN code	29332990
InChIKey	BTTRMCQEPDPCPA-UHFFFAOYSA-N
SMILES	C1=CC2=C(C=C1Cl)C(=O)OC2=O
PubChem CID	67044

Physical properties
Physical form	Crystalline
Appearance	White to off-white powder or crystals
LogP (XLogP3)	1.9
H-bond donors / acceptors	0 / 3
TPSA	43.4 Å²
Synonyms	5-chloroisobenzofuran-1,3-dione, 4-chlorophthalic acid anhydride, 1,3-Isobenzofurandione, 5-chloro-, 5-chlorophthalic anhydride, 5-chloro-1,3-dihydro-2-benzofuran-1,3-dione, 4-chloro phthalic anhydride, 5-chloro-isobenzofuran-1,3-dione, 4-Chlorophthalic acid anhydride 100 microg/mL in Acetonitrile, 4-Chlorophthalicanhydride, 5-Chloro-2-benzofuran-1,3-dione #

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, 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

Frequently asked questions

What is the CAS number of 4-Chlorophthalic anhydride, 98%?

The CAS Registry Number of 4-Chlorophthalic anhydride, 98% is 118-45-6. It is also known as 5-chloroisobenzofuran-1,3-dione, 4-chlorophthalic acid anhydride, 1,3-Isobenzofurandione, 5-chloro-.

What is the molecular formula and molecular weight of 4-Chlorophthalic anhydride, 98%?

4-Chlorophthalic anhydride, 98% has the molecular formula C8H3ClO3 and a molecular weight of 182.56 g/mol. Its IUPAC name is 5-chloro-2-benzofuran-1,3-dione.

Which grade and pack sizes of 4-Chlorophthalic anhydride, 98% can I order?

We supply 4-Chlorophthalic anhydride, 98% in (98%) grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Chlorophthalic anhydride, 98%?

Yes. Every lot of 4-Chlorophthalic anhydride, 98% 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 4-Chlorophthalic anhydride, 98% be shipped internationally?

Yes. 4-Chlorophthalic anhydride, 98% 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.