N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea
- Product Name
- 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-naphtho-4,6-Disulfonic acid;1 AMINO 8 HYDROXY 4:6 DISULFONIC ACID;1-AMINO-8-NAPHTHOL-4,6-DISULFONIC ACID;8-AMINO-1-NAPHTHOL-3,5-DISULFONIC ACID;4-Amino-5-naphthol-1,7-disulfonic acid;KACID(1-AMINO-8NAPHTHO-4,6-DISULFONICACID)
- CBNumber
- CB0207416
- Molecular Formula
- C10H9NO7S2
- Formula Weight
- 319.31
- MOL File
- 130-23-4.mol
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea Property
- 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)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- CHM0289797
- Product name
- 1-AMINO-8-NAPHTHOL-4,6-DISULFONIC ACID
- Purity
- 98.00%
- Packaging
- 5MG
- Price
- $495.64
- Updated
- 2021/12/16
- Product number
- T970
- Product name
- 4-Amino-5-hydroxynaphthalene-1,7-disulfonicacid
- Packaging
- 100mg
- Price
- $566
- Updated
- 2021/12/16
- Product number
- CM140668
- Product name
- 4-amino-5-hydroxynaphthalene-1,7-disulfonicacid
- Purity
- 95%
- Packaging
- 1g
- Price
- $1046
- Updated
- 2021/12/16
- Product number
- AS033083
- Product name
- 4-Amino-5-hydroxynaphthalene-1,7-disulfonicacid
- Purity
- 95%
- Packaging
- 1g
- Price
- $1087
- Updated
- 2021/12/16
- Product number
- BD17973
- Product name
- 4-Amino-5-hydroxynaphthalene-1,7-disulfonicacid
- Purity
- 95+%
- Packaging
- 1g
- Price
- $1120
- Updated
- 2021/12/16
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea Chemical Properties,Usage,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
Raw materials
Preparation Products
N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea Suppliers
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View Lastest Price from N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea manufacturers
- Product
- 1-Amino-8-naphthol-4,6-disulfonic acid 130-23-4
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-08-11
- Product
- 1-Amino-8-naphthol-4,6-disulfonic acid 130-23-4
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99.0%+
- Supply Ability
- 100 tons
- Release date
- 2019-12-30
- Product
- K Acid 130-23-4
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- Min98% HPLC
- Supply Ability
- g/kg/ton
- Release date
- 2020-01-29