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| CAS No.: | 119-28-8 |
|---|---|
| Name: | 1-Naphthylamine-7-sulfonic acid |
| Article Data: | 14 |
| Molecular Structure: | |
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|
|
| Formula: | C10H9NO3S |
| Molecular Weight: | 223.252 |
| Synonyms: | 1,7-Cleve'sacid;1-Amino-7-naphthalenesulfonic acid;1-Amino-7-sulfonaphthalene;8-Amino-2-naphthalenesulfonic acid;C.I.26135;Cleve's q-acid;NSC 4983;NSC 71784;8-Naphthylamine-2-sulfonic acid;2-naphthalenesulfonic acid, 8-amino-;8-aminonaphthalene-2-sulfonic acid; |
| EINECS: | 204-311-4 |
| Density: | 1.502 g/cm3 |
| Melting Point: | ≥300 °C(lit.) |
| Boiling Point: | 220°C (rough estimate) |
| Hazard Symbols: |
 C
|
| Risk Codes: | 34 |
| Safety: | 26-36/37/39-45 |
| Transport Information: | UN 2585 8/PG 3 |
| PSA: | 88.77000 |
| LogP: | 3.33070 |
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- 1219080-61-1IMIDAZOLE-2-BORONIC ACID
- 120-18-3
naphthalene-2-sulfonate
A
- 119-79-9
5-aminonaphthalene-2-sulfonic acid
B
- 119-28-8
8-amino-2-naphthalenesulfonic acid
| Conditions | Yield |
|---|---|
| With sulfuric acid; nitric acid at 25℃; anschl. bei 10grad, Reduzieren des erhaltenen Gemisches mit Eisen und sehr verd. Salzsaeure; | |
| With sulfuric acid; nitric acid at 25℃; dann bei 10grad, Reduzieren des erhaltenen Gemisches mit Eisen und sehr verd. Salzsaeure; | |
| Stage #1: naphthalene-2-sulfonate With sulfuric acid at 120℃; for 0.666667h; Stage #2: With nitric acid at 33 - 35℃; for 20h; Reagent/catalyst; Overall yield = 86 percent; Overall yield = 75 g; Further stages; |
- 18425-74-6
1-nitro-7-naphthalenesulfonic acid
- 119-28-8
8-amino-2-naphthalenesulfonic acid
| Conditions | Yield |
|---|---|
| With ammonium sulfide | |
| With iron; acetic acid |
- 20191-62-2
8-hydroxy-naphthalene-2-sulfonic acid
- 119-28-8
8-amino-2-naphthalenesulfonic acid
| Conditions | Yield |
|---|---|
| Reaktion des Natriumsalzes; Erhitzen des Reaktionsprodukts mit Ammoniak unter Druck auf 100-110grad, dann beim Ansaeuern; |
- 486-54-4
1-amino-naphthalene-2,7-disulfonic acid
- 7732-18-5
water
- 119-28-8
8-amino-2-naphthalenesulfonic acid
| Conditions | Yield |
|---|---|
| unter Druck; |
- 18425-74-6
1-nitro-7-naphthalenesulfonic acid
- 119-28-8
8-amino-2-naphthalenesulfonic acid
- 119-28-8
8-amino-2-naphthalenesulfonic acid
- 20191-62-2
8-hydroxy-naphthalene-2-sulfonic acid
| Conditions | Yield |
|---|---|
| Stage #1: 8-amino-2-naphthalenesulfonic acid With water; sodium hydrogensulfite for 15h; Reflux; Inert atmosphere; Stage #2: With sodium hydroxide In water for 4h; Reflux; Stage #3: With hydrogenchloride In water | 95% |
| With sodium disulfite man kocht und macht alkalisch; | |
| With sodium hydroxide at 260℃; |
- 119-28-8
8-amino-2-naphthalenesulfonic acid
- 3024-72-4
3,4-dichlorobenzoyl chloride
- 1415094-32-4
8-(3,4-dichlorobenzamido)naphthalene-2-sulfonic acid
| Conditions | Yield |
|---|---|
| With pyridine at 20℃; for 12h; Inert atmosphere; | 91% |
| Conditions | Yield |
|---|---|
| Stage #1: 4-nitro-aniline With hydrogenchloride; sodium nitrite In water at 0℃; for 0.333333h; Stage #2: 8-amino-2-naphthalenesulfonic acid In methanol; water at 20℃; for 0.5h; | 90% |
- 119-28-8
8-amino-2-naphthalenesulfonic acid
| Conditions | Yield |
|---|---|
| With hydrogenchloride; sodium nitrite at 55℃; for 0.5h; pH=2; | 87% |
| With ethanol; nitrate radical |
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Specification
The 1-Naphthylamine-7-sulfonic acid, with the CAS registry number 119-28-8 and EINECS registry number 204-311-4, has the systematic name and IUPAC name of 8-aminonaphthalene-2-sulfonic acid. It belongs to the following product categories: Intermediates of Dyes and Pigments; Intermediates. And the molecular formula of this chemical is C10H9NO3S.
The physical properties of 1-Naphthylamine-7-sulfonic acid are as following: (1)ACD/LogP: 0.42; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -3.04; (4)ACD/LogD (pH 7.4): -3.08; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 4; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 54.99 Å2; (13)Index of Refraction: 1.713; (14)Molar Refractivity: 58.27 cm3; (15)Molar Volume: 148.6 cm3; (16)Polarizability: 23.1×10-24cm3; (17)Surface Tension: 72.1 dyne/cm; (18)Density: 1.502 g/cm3.
Preparation and uses of 1-Naphthylamine-7-sulfonic acid: It can be prepared by naphthalin via sulfonation, nitration, neutralization, reduction and acid out. What's more, it is an intermediates of dyes and pigments, and it is also used in determination of nitrite formation from nitrate by bacteria.
You should be cautious while dealing with this chemical. It may cause burns. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).
You can still convert the following datas into molecular structure:
(1)SMILES: O=S(=O)(O)c1cc2c(cc1)cccc2N
(2)InChI: InChI=1/C10H9NO3S/c11-10-3-1-2-7-4-5-8(6-9(7)10)15(12,13)14/h1-6H,11H2,(H,12,13,14)
(3)InChIKey: QEZZCWMQXHXAFG-UHFFFAOYAH