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ChemicalBook >> CAS DataBase List >> Phthalic acid

Phthalic acid

Phthalic acid price.
  • $6 - $4094.48
  • Product name: Phthalic acid
  • CAS: 88-99-3
  • MF: C8H6O4
  • MW: 166.13
  • EINECS:201-873-2
  • MDL Number:MFCD00002467
  • Synonyms:1,2-phthalicacid ;Acide phtalique;acidephtalique ;acidephtalique(french) ;Kyselina ftalova;kyselinaftalova ;o-Benzenedicarboxylic acid;Phthalate Ion Chromatography Standard Solution Fluka
64 prices
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  • aablocks
  • AK Scientific
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  • Manufactureraablocks
  • Product numberAA0035DJ
  • Product descriptionPathalic Acid 98%
  • Packaging500g
  • Price$12
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA0035DJ
  • Product descriptionPathalic Acid 98%
  • Packaging1000g
  • Price$23
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA0035DJ
  • Product descriptionPathalic Acid 98%
  • Packaging250g
  • Price$9
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA0035DJ
  • Product descriptionPathalic Acid 97%
  • Packaging100g
  • Price$6
  • Updated2026-05-28
  • Buy
  • ManufacturerAK Scientific
  • Product numberS164
  • Product descriptionPhthalic acid
  • Packaging25g
  • Price$22
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0031794
  • Product descriptionPHTHALIC ACID 95.00%
  • Packaging50G
  • Price$2327.33
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0031794
  • Product descriptionPHTHALIC ACID 95.00%
  • Packaging100G
  • Price$2336.57
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0031794
  • Product descriptionPHTHALIC ACID 95.00%
  • Packaging500G
  • Price$4094.48
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR923932
  • Product descriptionPhthalic acid 98%
  • Packaging500g
  • Price$269
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR923932
  • Product descriptionPhthalic acid 98%
  • Packaging1kg
  • Price$450
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR923932
  • Product descriptionPhthalic acid 98%
  • Packaging100g
  • Price$124
  • Updated2021-12-16
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  • ManufacturerAtlantic Research Chemicals
  • Product numberAN048139
  • Product descriptionPhthalic acid 95
  • Packaging50g
  • Price$15.24
  • Updated2026-05-23
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  • ManufacturerAtlantic Research Chemicals
  • Product numberAN048139
  • Product descriptionPhthalic acid 95
  • Packaging100g
  • Price$19.05
  • Updated2026-05-23
  • Buy
  • ManufacturerAtlantic Research Chemicals
  • Product numberAN048139
  • Product descriptionPhthalic acid 95
  • Packaging25g
  • Price$12.7
  • Updated2026-05-23
  • Buy
  • ManufacturerAtlantic Research Chemicals
  • Product numberAN048139
  • Product descriptionPhthalic acid 95
  • Packaging5g
  • Price$7.62
  • Updated2026-05-23
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  • ManufacturerAtlantic Research Chemicals
  • Product numberAN048139
  • Product descriptionPhthalic acid 95
  • Packaging10g
  • Price$10.16
  • Updated2026-05-23
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Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA0035DJ Pathalic Acid 98% 500g $12 2026-05-28 Buy
aablocks AA0035DJ Pathalic Acid 98% 1000g $23 2026-05-28 Buy
aablocks AA0035DJ Pathalic Acid 98% 250g $9 2026-05-28 Buy
aablocks AA0035DJ Pathalic Acid 97% 100g $6 2026-05-28 Buy
AK Scientific S164 Phthalic acid 25g $22 2021-12-16 Buy
American Custom Chemicals Corporation CHM0031794 PHTHALIC ACID 95.00% 50G $2327.33 2021-12-16 Buy
American Custom Chemicals Corporation CHM0031794 PHTHALIC ACID 95.00% 100G $2336.57 2021-12-16 Buy
American Custom Chemicals Corporation CHM0031794 PHTHALIC ACID 95.00% 500G $4094.48 2021-12-16 Buy
Apolloscientific OR923932 Phthalic acid 98% 500g $269 2021-12-16 Buy
Apolloscientific OR923932 Phthalic acid 98% 1kg $450 2021-12-16 Buy
Apolloscientific OR923932 Phthalic acid 98% 100g $124 2021-12-16 Buy
Atlantic Research Chemicals AN048139 Phthalic acid 95 50g $15.24 2026-05-23 Buy
Atlantic Research Chemicals AN048139 Phthalic acid 95 100g $19.05 2026-05-23 Buy
Atlantic Research Chemicals AN048139 Phthalic acid 95 25g $12.7 2026-05-23 Buy
Atlantic Research Chemicals AN048139 Phthalic acid 95 5g $7.62 2026-05-23 Buy
Atlantic Research Chemicals AN048139 Phthalic acid 95 10g $10.16 2026-05-23 Buy

Properties

Melting point :210-211 °C (dec.) (lit.)
Boiling point :214.32°C (rough estimate)
Density :1.59 g/cm3 at 15 °C
bulk density :960kg/m3
vapor pressure :7.8 hPa (191 °C)
refractive index :1.5100 (estimate)
Flash point :168 °C
storage temp. :Store below +30°C.
solubility :methanol: 0.1 g/mL, clear
form :Powder
pka :2.89(at 25℃)
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
Henry's Law Constant :4.9×105 mol/(m3Pa) at 25℃, Duchowicz et al. (2020)
Dielectric constant :5.1(Ambient)
Stability :Stable. Combustible. Incompatible with strong oxidizing agents.
InChI :1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)
InChIKey :XNGIFLGASWRNHJ-UHFFFAOYSA-N
SMILES :OC(C1=C(C(O)=O)C=CC=C1)=O
LogP :0.73 at 20℃
CAS DataBase Reference :88-99-3(CAS DataBase Reference)
NIST Chemistry Reference :1,2-Benzenedicarboxylic acid(88-99-3)
EPA Substance Registry System :Phthalic acid (88-99-3)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
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.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

Phthalic acid is used as an active ingredient in polyesters and alkyd resins. It is also used as plasticizers for polyvinyl chloride and other polymers. It is also useful in the production of anthraquinone, phenolphthalein and phthalocyanine pigments. It serves as an organic reagent in the production of phthalates. It is used to prepare 1,3-cyclohexadiene by reduction using sodium amalgam.

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