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

Phthalic Anhydride (Other Names: Phthlandion Phthalicacidanhydride ...

离岸价格

获取最新报价

1 ~ 2 USD / Metric Ton ( Negotiable )

1 Metric Ton Minimum Order

国家:

China

型号:

bganyt-1

离岸价格:

1 ~ 2 USD / Metric Ton ( Negotiable )（面議）获取最新报价

位置:

Shandong,China(Mainland)

最小订单价格:

1 per Metric Ton

最小订单:

1 Metric Ton

包装细节:

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

交货时间:

7-15 days after confirmed the order

供应能力:

8000 Metric Ton per Month

付款方式:

T/T, L/C, Western Union

產品組 :

产品规格

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

详情

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. )≤	*0	*0	**0
thermostable Chroma(Chroma no. )≤	*0	**0	-
Chroma of vitriol(Chroma no. )≤	*0	**0	**0
crystallization point°C≥	**0.5	**0.3	**0.0
Purity(mass fraction)%≥	9.0	9.0	9.0
Free acid(mass fraction)≤ %	0.*0	0.*0	0.*0
Ash(mass fraction)%≤	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 °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 → 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.

国家:	China
型号:	bganyt-1
离岸价格:	1 ~ 2 / Metric Ton ( Negotiable ) （面議）获取最新报价
位置:	Shandong,China(Mainland)
最小订单价格:	1 per Metric Ton
最小订单:	1 Metric Ton
包装细节:	1.Inside plastic film, outside polywoven bag (All comply with customer's requests) 2.Size for 1
交货时间:	7-15 days after confirmed the order
供应能力:	8000 Metric Ton per Month
付款方式:	T/T, L/C, Western Union
產品組 :	-