2-Amino-5-Naphthol-7-Sulphonic Acid
2-Amino-5-naphthol-7-sulfonic Acid
CAS: 87-02-5
Molecular Formula: C10H9NO4S
2-Amino-5-Naphthol-7-Sulphonic Acid - Names and Identifiers
| Name | 2-Amino-5-naphthol-7-sulfonic Acid |
| Synonyms | J Acid Aminonaphthol Sulfonic Acid 2-Amino-5-naphthol-7-sulfonic Acid 2-Amino-5-Naphthol-7-Sulphonic Acid 7-amino-4-hydroxy-2-naphthalenesulfonic acid 7-amino-4-hydroxynaphthalene-2-sulfonic acid |
| CAS | 87-02-5 |
| EINECS | 201-718-9 |
| InChI | InChI=1/C10H9NO4S/c11-7-1-2-9-6(3-7)4-8(5-10(9)12)16(13,14)15/h1-5,12H,11H2,(H,13,14,15) |
2-Amino-5-Naphthol-7-Sulphonic Acid - Physico-chemical Properties
| Molecular Formula | C10H9NO4S |
| Molar Mass | 239.25 |
| Density | 1.627g/cm3 |
| Storage Condition | Room Temprature |
| Refractive Index | 1.748 |
| MDL | MFCD00003970 |
| Physical and Chemical Properties | Properties light gray powder or granules, pure white needle-like crystals. soluble in hot water, insoluble in cold water, almost insoluble in ethanol. Dissolved in alkali solution such as soda ash and caustic soda. |
| Use | Used as dye intermediates for the manufacture of reactive, direct and other dyes |
2-Amino-5-Naphthol-7-Sulphonic Acid - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN 2585 |
2-Amino-5-Naphthol-7-Sulphonic Acid - Upstream Downstream Industry
| Raw Materials | Tobias acid Sulfuric acid Sodium hydroxide |
| Downstream Products | 2-acetamido-5-hydroxy-7-naphthalenesulfonic acid |
2-Amino-5-Naphthol-7-Sulphonic Acid - Nature
Open Data Verified Data
light gray powder or granules, pure white needle-like crystals. Soluble in hot water, difficult to dissolve in cold water, almost insoluble in ethanol. Dissolved in soda ash and caustic soda and other alkaline solution, and the role of ferric chloride was brown red, further heating, the formation of brown black precipitation.
Last Update：2024-01-02 23:10:35
2-Amino-5-Naphthol-7-Sulphonic Acid - Preparation Method
Open Data Verified Data
The tocinic acid (2-amino-1-naphthalenesulfonic acid) is sulfonated with fuming sulfuric acid, and the product is obtained by hydrolysis, Suction filtration, washing, alkali fusion, acidification and Suction filtration.
Last Update：2022-01-01 10:56:29
2-Amino-5-Naphthol-7-Sulphonic Acid - Use
Open Data Verified Data
important dye intermediates for the manufacture of azo dyes, such as direct green lotus R, direct sun-resistant ash 2BL, direct acid-resistant purple, direct pink, direct copper salt Navy, sun-resistant blue B2R, reactive Red, reactive brilliant orange, reactive grass green and reactive red brown dyes, and can be used in the manufacture of BIS J acid, scarlet acid and phenyl J acid.
Last Update：2022-01-01 10:56:29
2-Amino-5-Naphthol-7-Sulphonic Acid - Safety
Open Data Verified Data
- basically non-toxic, rat oral ld5011500 mg/kg. J acid is packed in wooden cases or iron barrels lined with plastic bags, with a net weight of 60 (40) kg per box (barrel), and the mouth of the bag should be double tied. It shall be transported in clean, capped vehicles. When loading and unloading must be light up and down.
- store in a dry, clean house to prevent exposure to the sun and rain. When placed, the box (barrel) mouth is upward to avoid product leakage.
Last Update：2022-01-01 10:56:29
2-Amino-5-Naphthol-7-Sulphonic Acid - Nature
| storage conditions | Keep in dark place,Inert atmosphere,Room temperature |
| morphology | powder |
| acidity coefficient (pKa) | -0.28±0.40(Predicted) |
| color | yellow |
| InChIKey | KYARBIJYVGJZLB-UHFFFAOYSA-N |
| EPA chemical information | 7-Amino-4-hydroxy-2-naphthalenesulfonic acid (87-02-5) |
Last Update：2024-04-10 22:29:15
2-Amino-5-Naphthol-7-Sulphonic Acid - Security information
| WGK Germany | 1 |
| RTECS number | QK1295500 |
| F | 21 |
| HazardClass | 8 |
| PackingGroup | III |
| Toxicity | LD50 oral in rat: 11500mg/kg |
Last Update：2024-04-10 22:29:15
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View History
2-Amino-5-Naphthol-7-Sulphonic Acid
(1S,3R,4R)-3-(Boc-aMino)-4-hydroxy-cyclohexanecarboxylic acid ethyl ester
Ethyl 2-propynoate
SOYBEAN OIL, EPOXIDIZED
bicyclo[1.1.1]pentane-3-carboxylic acid
EMC
BUTTPARK 4357-92
CIS-2-(TERT-BUTOXYCARBONYLAMINO)-1-CYCLOPENTANECARBOXYLIC ACID, 98
NSC 134465
尿素硝酸铵溶液
(1S,3R,4R)-3-(Boc-aMino)-4-hydroxy-cyclohexanecarboxylic acid ethyl ester
Ethyl 2-propynoate
SOYBEAN OIL, EPOXIDIZED
bicyclo[1.1.1]pentane-3-carboxylic acid
EMC
BUTTPARK 4357-92
CIS-2-(TERT-BUTOXYCARBONYLAMINO)-1-CYCLOPENTANECARBOXYLIC ACID, 98
NSC 134465
尿素硝酸铵溶液
Raw Materials for 2-Amino-5-Naphthol-7-Sulphonic Acid
Downstream Products for 2-Amino-5-Naphthol-7-Sulphonic Acid