Phthalic Anhydride (Other Names: Phthlandion Phthalicacidanhydride ... By JINAN YUNTIAN CHEMICAL CO.LTD,

Phthalic Anhydride (Other Names: Phthlandion Phthalicacidanhydride ...

Prix FOB

Obtenir le dernier prix

1 ~ 2 / Metric Ton ( Negotiable )

1 Metric Ton Minimum Order

Pays:

China

N Â° de modÃ¨le:

bganyt-1

Prix FOB:

1 ~ 2 / Metric Ton ( Negotiable )(Negotiable) Obtenir le dernier prix

LocalitÃ©:

Shandong,China(Mainland)

Prix de commande minimale:

1 per Metric Ton

Commande minimale:

1 Metric Ton

Packaging Detail:

1.Inside plastic film, outside polywoven bag (All comply with customer's requests) 2.Size for 1

Heure de livraison:

7-15 days after confirmed the order

Capacité de Fournir:

8000 Metric Ton per Month

Payment Type:

T/T, L/C, Western Union

Groupe de produits :

SpÃ©cification du produit

Other Names: Phthlandion Phthalicacidanhydride
MF: C8H4O3
Purity (%): 99.8%min
Usage: Coating Auxiliary Agents
Brand Name: Yuntian

La description

Item	Index
Item	Top grade	First grade	Qualified product
Appearance	white scaly or crystalline powder		white scaly or crystalline powder with slight colors
molten Chroma(Chroma no. )â‰¤	*0	*0	**0
thermostable Chroma(Chroma no. )â‰¤	*0	**0	-
Chroma of vitriol(Chroma no. )â‰¤	*0	**0	**0
crystallization pointÂ°Câ‰¥	**0.5	**0.3	**0.0
Purity(mass fraction)%â‰¥	9.0	9.0	9.0
Free acid(mass fraction)â‰¤ %	0.*0	0.*0	0.*0
Ash(mass fraction)%â‰¤	0.*5	-	-

Uses: in industry and organic synthesis

Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. It undergoes hydrolysis and alcoholysis. Hydrolysis by hot water forms ortho-phthalic acid. This process is reversible: Phthalic anhydride re-forms upon heating the acid above **0 Â°C.

Hydrolysis of anhydrides is not typically a reversible process. However, phthalic acid is easily dehydrated to form phthalic anhydride due to the creation of a thermodynamically favorable *-membered ring.

Organic synthesis

Phthalic anhydride is a precursor to a variety of reagents useful in organic synthesis. Important derivatives include phthalimide and its many derivatives. Chiral alcohols form half-esters (see above), and these derivatives are often resolvable because they form diastereomeric salts with chiral amines such as brucine. A related ring-opening reaction involves peroxides to give the useful peroxy acid:

C6H4(CO)2O + H2O2 â†’ C6H4(CO3H)CO2H

Precursor to dyestuffs

Phthalic anhydride is widely used in industry for the production of certain dyes. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride.

Pays:	China
N Â° de modÃ¨le:	bganyt-1
Prix FOB:	1 ~ 2 / Metric Ton ( Negotiable ) (Negotiable) Obtenir le dernier prix
LocalitÃ©:	Shandong,China(Mainland)
Prix de commande minimale:	1 per Metric Ton
Commande minimale:	1 Metric Ton
Packaging Detail:	1.Inside plastic film, outside polywoven bag (All comply with customer's requests) 2.Size for 1
Heure de livraison:	7-15 days after confirmed the order
Capacité de Fournir:	8000 Metric Ton per Month
Payment Type:	T/T, L/C, Western Union
Groupe de produits :	-