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1,2-Benzenediacetic anhydride, also known as phthalic anhydride, is a white, crystalline organic compound with the chemical formula C8H4O3. It is an anhydride derived from the dicarboxylic acid phthalic acid, where two carboxylic acid groups are joined by an oxygen atom. 1,2-Benzenediacetic anhydride is widely used in the production of various chemicals, including dyes, plastics, and pharmaceuticals. It is also a key component in the synthesis of phthalate esters, which are used as plasticizers in the manufacturing of flexible polyvinyl chloride (PVC) products. Phthalic anhydride is commercially produced through the oxidation of naphthalene or o-xylene and is known for its versatile applications in the chemical industry.

4406-80-8

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4406-80-8 Usage

Appearance

White crystalline solid

Solubility

Insoluble in water, soluble in organic solvents

Uses

Intermediate in the production of pharmaceuticals, dyes, and other organic compounds

Chemical reactions

Esterification, amidation, and acylation

Versatility

Acts as a versatile building block in organic synthesis

Safety precautions

Can be harmful if inhaled, ingested, or in contact with skin

Handling

Proper safety precautions and handling procedures should be followed when working with this chemical

Check Digit Verification of cas no

The CAS Registry Mumber 4406-80-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,0 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4406-80:
(6*4)+(5*4)+(4*0)+(3*6)+(2*8)+(1*0)=78
78 % 10 = 8
So 4406-80-8 is a valid CAS Registry Number.

4406-80-8Upstream product

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