Skip to Content

For important updates on recent policy changes, please click here for more details.

Merck
CN
All Photos(2)

Key Documents

View All Documentation

Safety Information

320064

Sigma-Aldrich

Phthalic anhydride

ACS reagent, ≥99%

Synonym(s):

1,2-Benzenedicarboxylic anhydride, 1,3-Isobenzofurandione, Phthalic acid anhydride

Sign Into View Organizational & Contract Pricing

Select a Size

1 KIT
CN¥3,340.17

CN¥3,340.17

Please contact Customer Service for Availability
New, lower price on this item!
Request a Bulk Order
All Photos(2)

Select a Size

Change View
1 KIT
CN¥3,340.17

About This Item

Empirical Formula (Hill Notation):
C8H4O3
CAS Number:
85-44-9
Molecular Weight:
148.12
Beilstein:
118515
EC Number:
201-607-5
MDL number:
MFCD00005918
UNSPSC Code:
12352100
PubChem Substance ID:
24859242
NACRES:
NA.21

CN¥3,340.17

Please contact Customer Service for Availability
New, lower price on this item!
Request a Bulk Order

grade

ACS reagent

Quality Level

200

vapor density

5.1 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

Assay

≥99%
99.0-100.2%

form

flakes

autoignition temp.

1058 °F

expl. lim.

10.4 %

ign. residue

≤0.01%

bp

284 °C (lit.)

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
125733797995402915
Phthalic anhydride ACS reagent, &#8805;99%

320064

Phthalic anhydride

Phthalic anhydride ReagentPlus&#174;, 99%

125733

Phthalic anhydride

Phthalic anhydride anhydrous, free-flowing, Redi-Dri&#8482;, ACS reagent, &#8805;99%

797995

Phthalic anhydride

Phthalic acid ACS reagent, &#8805;99.5%

402915

Phthalic acid

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

bp

284 °C (lit.)

bp

284 °C (lit.)

bp

284 °C (lit.)

bp

-

mp

131-134 °C (lit.)

mp

131-134 °C (lit.)

mp

131-134 °C (lit.)

mp

210-211 °C (dec.) (lit.)

form

flakes

form

flakes

form

powder

form

powder or crystals

grade

ACS reagent

grade

-

grade

ACS reagent, anhydrous

grade

ACS reagent

General description

Phthalic anhydride is an anhydride of phthalic acid and a key intermediate in the production of plasticizers, dyes, polyesters resins, modifiers for rubber, and polymers.[1][2][3]

Application

Phthalic anhydride may be used as a reactant in the preparation of N-substituted phthalimides[4], poly(isothianaphthene)[5] and methyl (S)-2-phthalimido-4-methylthiobutanoate.[6]

Other Notes

Go to Redi-Dri™Product Listing 797995

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

related product

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

305.6 °F - DIN 51758

Flash Point(C)

152 °C - DIN 51758

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCV8570
    MKCT8897
    MKCN5082
    MKCK6719
    MKCK1408

    Don't see the Right Version?

    If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

    Search for a COA

    Already Own This Product?

    Find documentation for the products that you have recently purchased in the Document Library.

    Visit the Document Library

    Methyl (S)-2-phthalimido-4-oxobutanoate
    Meffre P, et al.
    Organic Syntheses, 76, 123-123 (1999)
    Ceramic foams directly-coated with flame-made V2O5/TiO2 for synthesis of phthalic anhydride
    Schimmoeller B, et al.
    J. Catal., 243(1), 82-92 (2006)
    New synthetic routes to poly (isothianaphthene) I. Reaction of phthalic anhydride and phthalide with phosphorus pentasulfide.
    van Asselt R, et al.
    Synt. Metals, 74(1), 65-70 (1995)
    Phthalic Acid and Derivatives
    Ullmann's Encyclopedia of Industrial Chemistry (2007)
    New synthetic ?tricks? One-pot preparation of N-substituted phthalimides from azides and phthalic anhydride
    Garcia J, et al.
    Tetrahedron Letters, 27(5), 639-640 (1986)
    View All Related Papers

    Articles

    Dihydropinene Pinane Greener Solvent for Organic Synthesis

    Effective in key synthesis reactions like Knoevenagel condensation, thalidomide synthesis, and Suzuki coupling for sustainable chemical transformations.

    Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

    Contact Technical Service