Phthalic anhydride, 99%

Name: Phthalic anhydride, 99%
Brand: Vaqora Chemicals
SKU: VQ-009160

About Phthalic anhydride, 99%

Listed under CAS 85-44-9, Phthalic anhydride is an acylating agent available from Vaqora Chemicals (Synthesis grade) with a typical assay of 99%. With the molecular formula C8H4O3, it has a molar mass of 148.11 g/mol. Its systematic (IUPAC) name is 2-benzofuran-1,3-dione. Common synonyms include 1,3-Isobenzofurandione and Phthalandione.

In its supplied form it is a white crystalline powder. Key physical data: a melting point of 131-134 °C and a boiling point of 284 °C. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 6 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for polymer and resin production and organic synthesis. Typical end-use sectors are pharmaceutical manufacturing, academic and industrial research and polymers and plastics.

Vaqora Chemicals supplies Phthalic anhydride in 500 g, 5 kg, 25 kg and 4 x 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Polymer & resin production
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Phthalic anhydride, 99%
Catalogue No.	VQ-009160
CAS Number	85-44-9
IUPAC name	2-benzofuran-1,3-dione
Molecular formula	C₈H₄O₃
Molecular weight	148.11 g/mol
Exact mass	148.016
Grade	Synthesis
Purity / assay	99%
HSN code	29173500
InChIKey	LGRFSURHDFAFJT-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC2=O
PubChem CID	6811

Physical properties
Physical form	Powder
Appearance	White crystalline powder
Melting point	131-134 °C
Boiling point	284 °C
Density	1.53 g/cm3 at 20 °C
LogP (XLogP3)	1.3
H-bond donors / acceptors	0 / 3
TPSA	43.4 Å²
Synonyms	1,3-Isobenzofurandione, Phthalandione, Retarder esen, 1,3-Dioxophthalan, 1,3-Phthalandione, Phthalic acid anhydride, Retarder AK, Retarder PD, o-Phthalic acid anhydride, Vulkalent B/C, Anidride ftalica, Ftalowy bezwodnik

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation

Precautionary statements: P233, P260, P261, P264, P264 + P265, P270, P271, P272, P280, P284, P301 + P317, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P333 + P317, P342 + P316, P362 + P364, P403, P403 + P233

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 85-44-9

Reference Standard

Phthalic Anhydride

CAS: 85-44-9
Formula: C₈H₄O₃
MW: 148.11 g/mol

In stock

ACS / AR

Phthalic anhydride anhydrous, ACS, AR 99.00–100.20%

CAS: 85-44-9
Formula: C₈H₄O₃
MW: 148.11 g/mol

VQ-046839

Frequently asked questions

What is the CAS number of Phthalic anhydride, 99%?

The CAS Registry Number of Phthalic anhydride, 99% is 85-44-9. It is also known as 1,3-Isobenzofurandione, Phthalandione, Retarder esen.

What is the molecular formula and molecular weight of Phthalic anhydride, 99%?

Phthalic anhydride, 99% has the molecular formula C8H4O3 and a molecular weight of 148.11 g/mol. Its IUPAC name is 2-benzofuran-1,3-dione.

Which grade and pack sizes of Phthalic anhydride, 99% can I order?

We supply Phthalic anhydride, 99% in Synthesis (99%) grade, in 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 Phthalic anhydride, 99%?

Yes. Every lot of Phthalic anhydride, 99% 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 Phthalic anhydride, 99% be shipped internationally?

Yes. Phthalic anhydride, 99% 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.