ChemicalBook >> CAS DataBase List >>4-Hydroxyisophthalic acid
4-Hydroxyisophthalic acid
- CAS No.
- 636-46-4
- Chemical Name:
- 4-Hydroxyisophthalic acid
- Synonyms
- 4-hipa;NSC 2445;Eupirina;Aspirin IMpurity B;Aspirin Impurity 2;RARECHEM AL BE 0104;4-Hydroxyisophthalic;Aspirin EP IMpurity B;4-hydroxy-isophthalicaci;4-HYDROXYISOPHTHALIC ACID
- CBNumber:
- CB4234715
- Molecular Formula:
- C8H6O5
- Molecular Weight:
- 182.13
- MDL Number:
- MFCD00010391
- MOL File:
- 636-46-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-05-28 03:04:44
| Melting point | >300°C |
|---|---|
| Boiling point | 310 C |
| Density | 1.4411 (rough estimate) |
| refractive index | 1.5690 (estimate) |
| storage temp. | 2-8°C |
| solubility | DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| form | solid |
| pka | 2+-.0.10(Predicted) |
| color | White to Pale Purple |
| Water Solubility | 0.3g/L(24 ºC) |
| Merck | 14,4827 |
| Stability | Hygroscopic |
| InChI | 1S/C8H6O5/c9-6-2-1-4(7(10)11)3-5(6)8(12)13/h1-3,9H,(H,10,11)(H,12,13) |
| InChIKey | BCEQKAQCUWUNML-UHFFFAOYSA-N |
| SMILES | OC(C1=CC(C(O)=O)=C(O)C=C1)=O |
| CAS DataBase Reference | 636-46-4(CAS DataBase Reference) |
| FDA UNII | P87FF77O00 |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/37/38-41-22-36/38 | |||||||||
| Safety Statements | 26-36/37/39-36-39-6 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | NT2544000 | |||||||||
| HS Code | 29182900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
|||||||||
| NFPA 704 |
|
4-Hydroxyisophthalic acid price More Price(49)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | Y0000405 | Salicylic acid impurity B European Pharmacopoeia (EP) Reference Standard | 636-46-4 | 15 mg | $167 | 2026-04-30 | Buy |
| Sigma-Aldrich | 797057 | 4-Hydroxyisophthalic acid 95% | 636-46-4 | 250mg | $148 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1609024 | Salicylic acid Related Compound B United States Pharmacopeia (USP) Reference Standard | 636-46-4 | 100mg | $1460 | 2026-04-30 | Buy |
| TCI Chemical | H0257 | 4-Hydroxyisophthalic Acid >98.0%(HPLC)(T) | 636-46-4 | 5g | $83 | 2026-04-30 | Buy |
| TCI Chemical | H0257 | 4-Hydroxyisophthalic Acid >98.0%(HPLC)(T) | 636-46-4 | 25g | $250 | 2026-04-30 | Buy |
4-Hydroxyisophthalic acid Chemical Properties, Uses, Production
Chemical Properties
White powder
Uses
4-Hydroxyisophthalic acid has been proposed as an improvement over aspirin. An impurity of Acetylsalicylic acid (A187780). Acetylsalicylic Acid Impurity B; Aspirin Impurity B
General Description
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
4-Hydroxyisophthalic acid Preparation Products And Raw materials
Global Suppliers ( 293)
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Capot Chemical Co., Ltd | +86 (0) 571 85 58 67 18 | China | 18187 | 66 | |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10972 | 64 |
| Nanjing Chemlin Chemical Co., Ltd | 025-83697070 13770331960 | info@chemlin.com.cn | China | 16306 | 64 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
View Latest Price from 4-Hydroxyisophthalic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-02 | 4-Hydroxyisophthalic acid
636-46-4
|
$5.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-04-22 | 4-Hydroxyisophthalic acid
636-46-4
|
$34.00-110.00 | 99.46% | 10g | TargetMol Chemicals Inc. | ||
 |
2026-04-22 | 4-Hydroxyisophthalic acid
636-46-4
|
$34.00-110.00 | 99.46% | 10g | TargetMol Chemicals Inc. |
-
- 4-Hydroxyisophthalic acid
636-46-4
- $5.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- 4-Hydroxyisophthalic acid
636-46-4
- $34.00-110.00
- 99.46%
- TargetMol Chemicals Inc.
-
- 4-Hydroxyisophthalic acid
636-46-4
- $34.00-110.00
- 99.46%
- TargetMol Chemicals Inc.
636-46-4 (4-Hydroxyisophthalic acid) Related Search:
HYDROXYISOPHTHALIC ACID, 4-
4-HYDROXYISOPHTHALIC ACID
4-HYDROXYBENZENE-1,3-DICARBOXYLIC ACID
4-HYDROXY-1,3-BENZENEDECARBOXYLIC ACID
4-HYDROXY-1,3-BENZENEDICARBOXYLIC ACID
ACETYLSALISYLIC ACID IMP B
NSC 2445
Aspirin EP IMpurity B
Aspirin IMpurity B
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1,3-Benzenedicarboxylicacid, 4-hydroxy-
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Acetylsalicylic Acid EP Impurity B
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4-hipa
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4-hydroxy-isophthalicaci
RARECHEM AL BE 0104
4-HYDROYLISOPHTHALIC ACID
4-Hydroxyisophthalic
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4-Hydroxy-m-phthalic acid
Eupirina
4-Hydroxyisophthalic acid,98%
Salicylic Acid Related Compound B (100 mg) (4-hydroxyisophthalic acid)
4-Hydroxyisophthalic acid (4-Hydroxybenzene-1,3-dicarboxylic acid)
Salicylic Acid EP Impurityuriy B
4-Hydroxyisophthalic acid(4-HIPA)
Acetylsalicylic Acid EP Impurity B (Aspirin Impurity B)
4-HydroxyisophthalicAcid>
Salicylic acid impurity B CRS
Acetylsalicylic Acid Impurity B
4-Hydroxy Isopthalic acid
Mesalazine Impurity(4-hydroxylphthallic acid)
Acetylsalicylic Acid EP Impurity B (4-Hydroxyisophthalic Acid)
Aspirin Impurity BQ: What is
Aspirin Impurity B Q: What is the CAS Number of
Aspirin Impurity B Q: What is the storage condition of
Aspirin Impurity B Q: What are the applications of
Aspirin Impurity B
Salicylic Acid Related Compound B (4-hydroxyisophthalic acid) (1609024)
Aspirin (Acetylsalicylic Acid) EP Impurity B
Salicylic Acid EP Impurity B
Salicylic Acid USP Related Compound B
Acetylsalicylic Acid EP Impurity B (Salicylic Acid USP Related Compound B)
4-Hydroxyisophthalic acid-RM
HYDROXYISOPHTHALIC ACID 4-(RG) 1g
4-Hydroxyisophthalicacid(AspirinImpurity)
4-Hydroxyisophthalic acid (Standard)
636-46-4
610-35-6
Aromatics, Impurities
API intermediates
Phthalic Acids, Esters and Derivatives
Aromatics
Impurities
