PARA-NAPHTHIONIC ACID, NA SALT
4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate
CAS: 130-13-2
Molecular Formula: C10H10NNaO3S
PARA-NAPHTHIONIC ACID, NA SALT - Names and Identifiers
PARA-NAPHTHIONIC ACID, NA SALT - Physico-chemical Properties
| Molecular Formula | C10H10NNaO3S |
| Molar Mass | 247.24 |
| Density | 1.6703 |
| Melting Point | 280°C (dec.)(lit.) |
| Appearance | Pink to light grayish purple powder |
| Color | White to Gray to Brown |
| Merck | 14,6403 |
| PH | 6.8-7.0 (10g/l, H2O, 20°C) |
| Storage Condition | Store below +30°C. |
| Sensitive | Air, light and humidity sensitivity |
| MDL | MFCD00044844 |
| Physical and Chemical Properties | white or off-white flaky crystals. Soluble in water, soluble in 95% ethanol, insoluble in ether, a small amount of concentrated aqueous caustic solution and ethanol solution. |
| Use | For the preparation of acidic, direct dyes and edible red pigment, also used as an antidote for nitrite and iodine poisoning |
PARA-NAPHTHIONIC ACID, NA SALT - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 3-8-23 |
| HS Code | 29214500 |
PARA-NAPHTHIONIC ACID, NA SALT - Nature
Open Data Verified Data
1-Naphthylamine -4-sulfonic acid is a white crystal or powder that loses water at 100 °c. The anhydrous was carbonized without melting at 280-300 °c. Rose in the air. The relative density was 1. 6703. Its sodium salt contains two or four molecules of crystal water. Sodium salt containing four molecules of crystal water is white or gray-white crystals, slightly sweet, soluble in water, aqueous solution with blue fluorescence, soluble in 95% ethanol, insoluble in ether, dissolved in a small amount of concentrated aqueous caustic and ethanol solution. The pH of the 1% aqueous solution was 6.8. Decomposition when heated.
Last Update：2024-01-02 23:10:35
PARA-NAPHTHIONIC ACID, NA SALT - Preparation Method
Open Data Verified Data
by 1 a naphthylamine and sulfuric acid in trichlorobenzene in 180~190 deg C reaction to generate 1 a naphthylamine sulfate, continue at about 224 deg C heat preservation, make it into 1-1-naphthylamine -4-sulfonic acid, then sodium carbonate and sodium salt solution, using trichlorobenzene as solvent, the product unreacted raw materials
1 A naphthylamine was extracted. The reaction product is concentrated, filtered and crystallized to obtain a finished product.
Last Update：2022-01-01 10:56:25
PARA-NAPHTHIONIC ACID, NA SALT - Use
Open Data Verified Data
azo dye intermediates, used in the production of acid, direct and acid red dyes, can also be used as nitrite and iodine poisoning antidote.
Last Update：2022-01-01 10:56:24
PARA-NAPHTHIONIC ACID, NA SALT - Safety
Open Data Verified Data
- toxic, inhalation, swallowing or absorption through the skin can cause poisoning. Attention should be paid to the production process to take Protection Measure, the production site should maintain good ventilation, the operator should wear protective equipment.
- The bag is lined with plastic bags or double plastic bags. 50kg per bag. Store in a cool, ventilated, dry place. Handling should be prevented from being broken. Protect against sun exposure and moisture during transport and keep away from fire. According to the provisions of the storage and transportation of toxic chemicals.
Last Update：2022-01-01 10:56:25
PARA-NAPHTHIONIC ACID, NA SALT - Reference Information
| dissociation constant | 0 at 30 ℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used to prepare acidic, direct dyes and edible red pigments, and also used as an antidote to nitrite and iodine poisoning |
Last Update：2024-04-10 22:29:15
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Product Name: Ponceau 4R Impurity 1 Visit Supplier Webpage Request for quotationCAS: 130-13-2
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Multiple Specifications
Product Name: Sodium 4-amino-1-naphthalenesulfonate Request for quotationCAS: 130-13-2
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Mobile: +86 19849939632
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Product Name: 4-amino-1-naphthalenesulfonate Request for quotationCAS: 130-13-2
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Product Name: 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate Request for quotation
CAS: 130-13-2
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
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CAS: 130-13-2
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
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