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Phthalic acid CAS 88-99-3

Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. It is an isomer of isophthalic acid and terephthalic acid. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale.


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Model:
88-99-3
Brand:
boss chem
Code:
88-99-3

Product Description

Phthalic acid

CAS No.88-99-3

Alias: 1,2-dicarboxybenzene;1,2-phthalicacid;Acide phtalique;acidephtalique;acidephtalique(french);Kyselina ftalova;kyselinaftalova;o-Benzenedicarboxylic acid

Molecular formula: C8H6O4

Relative molecular mass: 166.13

Structural formula:

88-99-3

1. Performance and use:

Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. It is an isomer of isophthalic acid and terephthalic acid.

2. Technical indicators

Phthalic acid Chemical Properties

Melting point	210-211 °C (dec.) (lit.)
Boiling point	214.32°C (rough estimate)
density	1.59 g/cm3 at 15 °C
vapor pressure	7.8 hPa (191 °C)
refractive index	1.5100 (estimate)
Fp	168 °C
storage temp.	Store below +30°C.
solubility	methanol: 0.1 g/mL, clear
pka	2.89(at 25℃)
form	Powder
color	White
PH	3.2(1 mM solution);2.55(10 mM solution);2(100 mM solution);
Water Solubility	7 g/L (25 ºC)
Merck	14,7371
BRN	608199
Dielectric constant	5.1（Ambient）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey	XNGIFLGASWRNHJ-UHFFFAOYSA-N
LogP	0.73 at 20℃
CAS DataBase Reference	88-99-3

3. Packaging and storage

Phthalic acid solid is packaged in plastic woven bags lined with polyethylene bags, with a net weight of 25kg per bag, which can also be determined according to user needs.

Store in a cool and ventilated place indoors, avoid moisture and exposure, and the storage period is twelve months.

4. Safety protection

Moderately toxic by ingestion and intraperitoneal routes. A skin and mucous membrane irritant. Combustible when heated. In the form of dust (anhydride) it can explode. Mixtures with sodmm nitrite explode when heated. Violent reaction with HNO3. When heated to decomposition it emits acrid smoke and irritating fumes. Used in synthesis of dyes and dyestuffs, in medcines and perfumes.

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Phthalic acid

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