ChemicalBook >> CAS DataBase List >>o-Cresolphthalein Complexone
o-Cresolphthalein Complexone
- CAS No.
- 2411-89-4
- Chemical Name:
- o-Cresolphthalein Complexone
- Synonyms
- O-CRESOLPHTHALEXON;PHTHALEIN COMPLEXON;O-CPC;exone;ein CompL;Nsc 298195;Cresolphtha;METAL PHTHALEIN;PHTHALEIN PURPLE;Cresolphthalexon
- CBNumber:
- CB6431655
- Molecular Formula:
- C32H32N2O12
- Molecular Weight:
- 636.61
- MDL Number:
- MFCD00005911
- MOL File:
- 2411-89-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-07-25 07:39:42
| Product description | Number | Pack Size | Price |
| o-Cresolphthalein Complexone powder | P5631 | 1g | $35 |
| o-Cresolphthalein Complexone powder | P5631 | 5g | $113 |
| Phthalein purple metal indicator Reag. Ph Eur | 1.07297 | 1g | $297 |
| Phthalein purple metal indicator Reag. Ph Eur | 1.07297 | 10g | $805 |
| Phthalein Complexon | P3166 | 1G | $28 |
| More product size | |||
| Melting point | 181-185 °C (dec.)(lit.) |
|---|---|
| Boiling point | 892.1±65.0 °C(Predicted) |
| Density | 1.515±0.06 g/cm3(Predicted) |
| bulk density | 50kg/m3 |
| storage temp. | Store below +30°C. |
| solubility | NaOH: soluble50mg/mL |
| form | Powder |
| pka | 1.47, 8.24(at 25℃) |
| color | white to off-white |
| PH Range | Colorless (8.2) to red (9.8) |
| Water Solubility | SLIGHTLY SOLUBLE |
| λmax | 575nm, 377nm |
| BRN | 381994 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Major Application | Sensors, photoconductors, copying materials, rubber, body fiuid testing, determination of calcium, magnesium, tin, method for measuring urea nitrogen, liposomal construct for diagnostic use, cardiovascular disease, antibacterial agent |
| InChIKey | IYZPEGVSBUNMBE-UHFFFAOYSA-N |
| SMILES | Cc1cc(cc(CN(CC(O)=O)CC(O)=O)c1O)C2(OC(=O)c3ccccc23)c4cc(C)c(O)c(CN(CC(O)=O)CC(O)=O)c4 |
| FDA UNII | A4P6737I7F |
| EPA Substance Registry System | Glycine, N,N'-[(3-oxo-1(3H)-isobenzofuranylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)- (2411-89-4) |
| UNSPSC Code | 12171502 |
| NACRES | NA.47 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H315-H319-H335 | |||||||||
| Precautionary statements | P261-P305+P351+P338 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 20/21/22-36/37/38 | |||||||||
| Safety Statements | 22-24/25-36-26 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29322980 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| NFPA 704 |
|
o-Cresolphthalein Complexone price More Price(65)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | P5631 | o-Cresolphthalein Complexone powder | 2411-89-4 | 1g | $35 | 2026-04-30 | Buy |
| Sigma-Aldrich | P5631 | o-Cresolphthalein Complexone powder | 2411-89-4 | 5g | $113 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.07297 | Phthalein purple metal indicator Reag. Ph Eur | 2411-89-4 | 1g | $297 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.07297 | Phthalein purple metal indicator Reag. Ph Eur | 2411-89-4 | 10g | $805 | 2026-04-30 | Buy |
| TCI Chemical | P3166 | Phthalein Complexon | 2411-89-4 | 1G | $28 | 2026-04-30 | Buy |
o-Cresolphthalein Complexone Chemical Properties,Uses,Production
Chemical Properties
White powder
Uses
Indicator for complexometric titration of Mg, Ca, Sr and Ba. It is used as an alkaline earth metal ion indicator. Suggested to be colorless at pH 11, but turns pink in the presence of alkaline earth metals. Also utilized in an auto analyzer to determine serum calcium.
Purification Methods
o-Cresolphthalein (a complexon precursor without the two bis-carboxymethylamino groups) is a contaminant and is one of the starting materials. It can be removed by dissolving the reagent in H2O and adding a 3-fold excess of sodium acetate and fractionally precipitating it by dropwise addition of HCl to the clear filtrate. Wash the precipitate with cold H2O and dry the monohydrate at 30o in a vacuum. The pure material gives a single spot on paper chromatography (eluting solvent EtOH/water/phenol, 6:3:1, and developing with NaOH). [Anderegg et al. Helv Chim Acta 37 113 1954.] It complexes with Ba, Ca, Cd, Mg and Sr. [Beilstein 18 III/IV 8141.]
o-Cresolphthalein Complexone Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 343)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 | sales1@chuanghaibio.com | China | 5216 | 58 |
| ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | +86-15225627621 +86-13213167925 | jiuyitime@fdachem.com | China | 16505 | 58 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 14036 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21533 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29766 | 58 |
| CONIER CHEM AND PHARMA LIMITED | sales@conier.com | China | 49906 | 58 | |
| Tangshan Moneide Trading Co., Ltd. | +86-315-8309571 +86-15633399667 | sales@moneidechem.com | China | 573 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +1-00000000000 | marketing@targetmol.com | United States | 32431 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34526 | 58 |
| Shanghai UCHEM Inc. | +86-18930848214 +86-021-56762820 | sales@myuchem.com | China | 8898 | 58 |
View Lastest Price from o-Cresolphthalein Complexone manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-07-24 | o-Cresolphthalein Complexone
2411-89-4
|
$43.00-96.00 | N/A | 10g | TargetMol Chemicals Inc. | ||
 |
2026-07-22 | o-Cresolphthalein Complexone
2411-89-4
|
1kg | 99% | 20MT | Watson Biotechnology Co.,Ltd | ||
 |
2026-07-02 | Phthalein Complexon
2411-89-4
|
$2.20-8.80 | 1KG | 99% | ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD |
-
- o-Cresolphthalein Complexone
2411-89-4
- $43.00-96.00
- N/A
- TargetMol Chemicals Inc.
-
- o-Cresolphthalein Complexone
2411-89-4
- 99%
- Watson Biotechnology Co.,Ltd
-
- Phthalein Complexon
2411-89-4
- $2.20-8.80
- 99%
- ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
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Cresolphthalein Complexon
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O-CRESOLPHTHALEIN-3',3''-BIS(METHYLIMINODI-ACETIC ACID)
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CRESOLPHTHALEIN COMPLEXONE
CRESOL PHTHALEXONE
METAL PHTHALEIN
METALPHTHALEIN 1
METAL PHTHALEINE
PHTHALEIN PURPLE INDICATOR FOR METALTITR ATION
O-CRESOLPHTHALEIN COMPLEXON, INDICATOR F OR COMPLEXOMETRY
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O-CresolphthaleineComplexone
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o-cresolphthalein complexone, indicator grade
2-cresolphthalexon
