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Isophthalic acid

Isophthalic acid
Isophthalic acid structure
CAS No.
121-91-5
Chemical Name:
Isophthalic acid
Synonyms
Isophthalic;isophthalate;IPA)Isophthalic;M-PHTHALIC ACID;1,3-phthalicacid;ISOPHTHALIC ACID;META-PHTHALICACID;acideisophtalique;Acide isophtalique;kyselinaisoftalova
CBNumber:
CB3262667
Molecular Formula:
C8H6O4
Formula Weight:
166.13
MOL File:
121-91-5.mol

Isophthalic acid Properties

Melting point:
341-343 °C(lit.)
Boiling point:
214.32°C (rough estimate)
Density 
1,54 g/cm3
refractive index 
1.5100 (estimate)
storage temp. 
Store below +30°C.
solubility 
0.12g/l
form 
Crystalline Powder
pka
3.54(at 25℃)
color 
White to off-white
Water Solubility 
0.01 g/100 mL (25 ºC)
Merck 
14,5197
BRN 
1909332
Stability:
Stable. Incompatible with strong oxidizing agents, strong bases.
InChIKey
QQVIHTHCMHWDBS-UHFFFAOYSA-N
CAS DataBase Reference
121-91-5(CAS DataBase Reference)
NIST Chemistry Reference
1,3-Benzenedicarboxylic acid(121-91-5)
EPA Substance Registry System
1,3-Benzenedicarboxylic acid(121-91-5)

SAFETY

Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  24/25-36-26
WGK Germany  2
RTECS  NT2007000
Autoignition Temperature 1198 °F
TSCA  Yes
HS Code  29173980
Hazardous Substances Data 121-91-5(Hazardous Substances Data)

Isophthalic acid price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich I19209 Isophthalic acid 99% 121-91-5 2kg $47.3 2018-11-13 Buy
Sigma-Aldrich 42304 Isophthalic acid analytical standard 121-91-5 50mg $59.2 2018-11-13 Buy
TCI Chemical I0155 Isophthalic Acid >99.0%(GC)(T) 121-91-5 25g $14 2018-11-22 Buy
TCI Chemical I0155 Isophthalic Acid >99.0%(GC)(T) 121-91-5 500g $24 2018-11-22 Buy
Alfa Aesar A14445 Isophthalic acid, 99% 121-91-5 250g $16.6 2018-11-13 Buy

Isophthalic acid Chemical Properties,Uses,Production

Description

Iso phthalic acid is an organic compound with the formula C6H4(CO2H)2. This colourless solid is an isomer of phthalic acid and terephthalic acid. These aromatic dicarboxylic acids are used as precursors (in form of acyl chlorides) to commercially important polymers, e.g. the fire-resistant material Nomex. Mixed with terephthalic acid, iso phthalic acid is used in the production of resins for drink bottles. The high-performance polymer poly benzimidazole is produced from iso phthalic acid.

Chemical Properties

whitetolightyellowcrytalpowe

Uses

Purified Isophthalic Acid (PIA) is mainly used as intermediate for high performance UPR, resins for coatings, high solids paints, gel coats, modifier of PET for bottles. Product Data Sheet

Preparation

Iso phthalic acid is produced on the billion kilogram per year scale by oxidizing meta-xylene using oxygen . The process employs a cobalt-manganese catalyst. In the laboratory, chromic acid can be used as the oxidant. It also arises by fusing potassium meta-sulpho benzoate , or meta - brom benzoate with potassium formate (terephthalic acid is also formed in the last case).
The barium salt (as its hexa hydrate) is very soluble (a distinction between phthalic and terephthalic acids). Uvitic acid, 5- methylisophthalic acid, is obtained by oxidizing mesitylene or by condensing pyroracemic acid with baryta water.

Definition

ChEBI: A benzenedicarboxylic acid that is benzene substituted by carboxy groups at position 1 and 3. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and terephthalic acids.

General Description

White solid with a slight unpleasant odor. Sinks in water.

Air & Water Reactions

Dust forms explosive mixture in air [USCG, 1999].

Reactivity Profile

Isophthalic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Isophthalic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

Health Hazard

May cause slight to moderate irritation of eyes, skin, and mucous membranes on prolonged contact. Ingestion may cause gastrointestinal irritation.

Fire Hazard

Behavior in Fire: Dust forms explosive mixture in air.

Purification Methods

Crystallise the acid from aqueous EtOH. [Beilstein 9 IV 3292.]

Isophthalic acid Preparation Products And Raw materials

Raw materials

Preparation Products


Isophthalic acid Suppliers

Global( 244)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Anhui Royal Chemical Co., Ltd.
+86-025-86736275
dana.jiang@royal-chem.com CHINA 495 55
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 sales@capotchem.com China 19947 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22064 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20743 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32606 55
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile; WhatsApp; Telegram)
+86-571-56059825 fandachem@gmail.com CHINA 2548 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1747 55
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24093 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254
peter@hubeijusheng.com CHINA 20177 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 4696 58

View Lastest Price from Isophthalic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-01 Isophthalic acid
121-91-5
US $3030.00 / KG 25KG 99 200T career henan chemical co

Isophthalic acid Spectrum


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