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Phthalic acid

Phthalic acid
Phthalic acid
Chemical Name:
Phthalic acid
NSC 5348;Phthalsure;Sunftal 20;THALIC ACID;AURORA 15195;PATHALIC ACID;PHTHALIC ACID;acidephtalique;Acide phtalique;kyselinaftalova
Molecular Formula:
Formula Weight:
MOL File:

Phthalic acid Properties

Melting point:
210-211 °C (dec.)(lit.)
Boiling point:
214.32°C (rough estimate)
vapor pressure 
7.8 hPa (191 °C)
refractive index 
1.5100 (estimate)
Flash point:
168 °C
storage temp. 
Store below +30°C.
methanol: 0.1 g/mL, clear
2.89(at 25℃)
2 (5g/l, H2O, 20℃)
Water Solubility 
7 g/L (25 ºC)
Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference
88-99-3(CAS DataBase Reference)
NIST Chemistry Reference
1,2-Benzenedicarboxylic acid(88-99-3)
EPA Substance Registry System
1,2-Benzenedicarboxylic acid(88-99-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  1
RTECS  TH9625000
HS Code  29173980
Hazardous Substances Data 88-99-3(Hazardous Substances Data)
Toxicity LD50 orally in rats: 7.9 g/kg (Shaffer)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Phthalic acid price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 402915 Phthalic acid ACS reagent, ≥99.5% 88-99-3 1kg $184 2018-11-20 Buy
Sigma-Aldrich 1535899 Phthalic acid United States Pharmacopeia (USP) Reference Standard 88-99-3 50mg $394 2018-11-13 Buy
TCI Chemical P0287 Phthalic Acid >99.0%(GC)(T) 88-99-3 25g $16 2018-11-22 Buy
TCI Chemical P0287 Phthalic Acid >99.0%(GC)(T) 88-99-3 500g $47 2018-11-22 Buy
Alfa Aesar 041770 Phthalic acid, ACS, 99.5+% 88-99-3 100g $29.2 2018-11-16 Buy

Phthalic acid Chemical Properties,Uses,Production


Organic reagent used to synthesize phthalates.


ChEBI: A benzenedicarboxylic acid cosisting of two carboxy groups at ortho positions.

General Description

White crystals or fine white powder.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Phthalic acid is a carboxylic acid. Phthalic acid is sensitive to exposure to extreme heat. Phthalic acid reacts violently with nitric acid. Phthalic acid is incompatible with sodium nitrite. Phthalic acid is also incompatible with oxidizers. .

Fire Hazard

Phthalic acid is combustible.

Safety Profile

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.

Purification Methods

Crystallise phthalic acid from water. [Beilstein 9 IV 3167.]

Phthalic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Phthalic acid Suppliers

Global( 255)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1659 55
Hubei Jusheng Technology Co.,Ltd.
86-155-27864001 CHINA 18004 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 10967 58
career henan chemical co
+86-371-86658258 CHINA 19990 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3624 58
Shenzhen Vtolo Chemicals Co., Ltd. 13534282526
+86 0755 2767-0086-806 China 232 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40395 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84

View Lastest Price from Phthalic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-23 Phthalic acid
US $1.00 / kg 1kg 98%min as request career henan chemical co

Phthalic acid Spectrum

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