N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea
- CAS No.
- 130-23-4
- Chemical Name:
- N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea
- Synonyms
- K ACID;Euopean K Acid;EUROPEAN K-ACID;1-Amino-8-naphthol-4,6-disulfonicaci;1 AMINO 8 HYDROXY 4:6 DISULFONIC ACID;1-amino-8-naphtho-4,6-Disulfonic acid;8-AMINO-1-NAPHTHOL-3,5-DISULFONIC ACID;1-AMINO-8-NAPHTHOL-4,6-DISULFONIC ACID;4-Amino-5-naphthol-1,7-disulfonic acid;KACID(1-AMINO-8NAPHTHO-4,6-DISULFONICACID)
- CBNumber:
- CB0207416
- Molecular Formula:
- C10H9NO7S2
- Molecular Weight:
- 319.31
- MDL Number:
- MFCD00035711
- MOL File:
- 130-23-4.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95%(HPLC) | T970 | 25mg | $95 |
| 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95%(HPLC) | T970 | 100mg | $315 |
| 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95+% | CD44000636 | 250mg | $447 |
| 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95+% | CD44000636 | 1g | $1118 |
| 1-Amino-8-naphthol-4,6-disulfonic acid 95%(HPLC) | AA000TSM | 25mg | $106 |
| More product size | |||
| Density | 1.880±0.06 g/cm3(Predicted) |
|---|---|
| pka | -0.83±0.40(Predicted) |
| Water Solubility | 20g/L at 26.4℃ |
| LogP | -2.33 |
| CAS DataBase Reference | 130-23-4(CAS DataBase Reference) |
| FDA UNII | XG4RHP73ZN |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| REACH Registrations | Inactive |
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea price
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| AK Scientific | T970 | 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95%(HPLC) | 130-23-4 | 25mg | $95 | 2026-06-04 | Buy |
| AK Scientific | T970 | 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95%(HPLC) | 130-23-4 | 100mg | $315 | 2026-06-04 | Buy |
| Crysdot | CD44000636 | 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95+% | 130-23-4 | 250mg | $447 | 2026-05-27 | Buy |
| Crysdot | CD44000636 | 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid 95+% | 130-23-4 | 1g | $1118 | 2026-05-27 | Buy |
| aablocks | AA000TSM | 1-Amino-8-naphthol-4,6-disulfonic acid 95%(HPLC) | 130-23-4 | 25mg | $106 | 2026-05-25 | Buy |
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea Chemical Properties,Uses,Production
Chemical Properties
1-Amino-8-hydroxynaphthalene-4,6-disulfonic acid [130-23-4]. (4-amino-5-hydroxynaphthalene-1,7-disulfonic acid), K acid, C10H9NO7S2, Mr 319.3: the acid sodium salt of 1-Amino-8-hydroxynaphthalene-4,6-disulfonic acid is very soluble in water, but the acid potassium salt is less soluble and is more easily salted out. K acid couples under acid and alkaline conditions in a similar manner to H acid.
Uses
Azo dye intermediate.
Uses
The N-substituted derivatives of K acid, such as N-acetyl, N-benzoyl, N-(2,5-dichlorobenzoyl), and N-benzyl, are used as monoazo coupling components in special cases where an improvement in dye properties over the H acid analogue is demonstrable.
Production Methods
1-Aminonaphthalene-4,6,8-trisulfonic acid paste is heated with sodium hydroxide liquor in an autoclave at 170℃ for 12 h, after which the mixture is added to excess dilute hydrochloric acid. After heating to remove sulfur dioxide, the product (including ca. 8 % of the isomeric 5-amino-2-hydroxynaphthalene-4,8-disulfonic acid) is completely precipitated by cooling and is isolated in 86 % yield. Purification of crude K acid may be effected by dissolving it in aqueous alkali and filtering off the less soluble 5,2,4,8-isomer before reprecipitating.
Flammability and Explosibility
Not classified
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63645 | 58 |
| CONIER CHEM AND PHARMA LIMITED | sales@conier.com | China | 49906 | 58 | |
| career henan chemical co | +86-0371-86658258 | factory@coreychem.com | China | 29780 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34526 | 58 |
| Dideu Industries Group Limited | +86-29-89586680 +86-15129568250 | 1059@dideu.com | China | 29096 | 58 |
| Alfa Chemistry | +1-5166625404; | Info@alfa-chemistry.com | United States | 20000 | 58 |
| GIHI CHEMICALS CO.,LIMITED | +86-571-86217390; +8618058761490 | info@gihichemicals.com | China | 49860 | 58 |
| Shanghai Likang New Materials Co., Limited | +86-16631818819 +86-17736933208 | 3684455296@qq.com | China | 9287 | 58 |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | +8618950047208 | ellena@amitychem.com | China | 43392 | 58 |
| DAYANG CHEM (HANGZHOU) CO.,LTD | +86-88938639 +86-17705817739 | info@dycnchem.com | China | 53799 | 58 |
View Lastest Price from N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-11-18 | N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea
130-23-4
|
$1.10 | 1g | 99.00% | 100 Tons Min | Dideu Industries Group Limited | |
 |
2021-08-12 | 1-Amino-8-naphthol-4,6-disulfonic acid
130-23-4
|
$10.00-15.00 | 1KG | 99%+ HPLC | Zhuozhou Wenxi import and Export Co., Ltd | ||
 |
2020-02-26 | 1-Amino-8-naphthol-4,6-disulfonic acid
130-23-4
|
1KG | 99.0%+ | 100 tons | Shaanxi Dideu Medichem Co. Ltd |
-
- N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea
130-23-4
- $1.10
- 99.00%
- Dideu Industries Group Limited
-
- 1-Amino-8-naphthol-4,6-disulfonic acid
130-23-4
- $10.00-15.00
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
-
- 1-Amino-8-naphthol-4,6-disulfonic acid
130-23-4
- 99.0%+
- Shaanxi Dideu Medichem Co. Ltd
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