| Identification | More | [Name]
2-Amino-1,5-naphthalenedisulfonic acid | [CAS]
117-62-4 | [Synonyms]
2-AMINO-1,5-NAPHTHALENE DISULFONIC ACID
2-AMINONAPHTHALENE-1,5-DISULFONIC ACID
2-NAPHTHYLAMINE-1,5-DISULFONIC ACID
D SALT
SULFO TOBIAS ACID
SULPHOTOBIAS ACID
2-amino-1,5-naphthalenedisulfonic
2-amino-5-naphthalenedisulfonicacid
5-sulfo-tobiasaci
kyselina2-naftylamin-1,5-disulfonova
kyselinasulfo-tobiasova
Sulfonic Tobias Acid
2-NAPHTHYLAMINE-1 5-DISULFONIC ACID SODI
2-NAPHTHYLAMINE-1,5-DISULFONIC ACID, F. PROT. SEQ. ANALYSIS
1,5-Naphthalenedisulfonic acid, 2-amino-
2-AMINO-1,5-NAPHTHALENEDISULPHONICACID | [EINECS(EC#)]
204-201-6 | [Molecular Formula]
C10H9NO6S2 | [MDL Number]
MFCD00021512 | [Molecular Weight]
303.31 | [MOL File]
117-62-4.mol |
| Chemical Properties | Back Directory | [Appearance]
BEIGE POWDER | [Boiling point ]
205.8°C (rough estimate) | [density ]
1.6329 (rough estimate) | [refractive index ]
1.7330 (estimate) | [storage temp. ]
2-8°C
| [pka]
-0.51±0.40(Predicted) | [Water Solubility ]
soluble | [InChI]
InChI=1S/C10H9NO6S2/c11-8-5-4-6-7(10(8)19(15,16)17)2-1-3-9(6)18(12,13)14/h1-5H,11H2,(H,12,13,14)(H,15,16,17) | [InChIKey]
YAIKCRUPEVOINQ-UHFFFAOYSA-N | [SMILES]
C1(S(O)(=O)=O)=C2C(C(S(O)(=O)=O)=CC=C2)=CC=C1N | [LogP]
-1.85 | [CAS DataBase Reference]
117-62-4(CAS DataBase Reference) | [EPA Substance Registry System]
117-62-4(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,C | [Risk Statements ]
R36:Irritating to the eyes.
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
1759 | [WGK Germany ]
2
| [RTECS ]
QJ6135000
| [F ]
8-10 | [TSCA ]
TSCA listed | [REACH Registrations]
Active | [HazardClass ]
8 | [PackingGroup ]
III | [Toxicity]
LD50 oral in rat: 5430mg/kg |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
2-Aminonaphthalene-1-sulfonic acid | [Preparation Products]
6-AMINO-1-NAPHTHOL-->2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid-->6-Amino-1-naphthalenesulfonic acid-->REACTIVE ORANGE 84-->trisodium 2-[[6-[(4,6-dichloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate-->Reactive Red 239-->Reactive Yellow 37-->Reactive orange 64-->1,5-Naphthalenedisulfonicacid,2-[2-[8-[(4,6-dichloro-5-cyano-2-pyrimidinyl)amino]-1-hydroxy-3,6-disulfo-2-naphthalenyl]diazenyl]-,sodium salt (1:4)-->Reactive orange 122-->trisodium 2-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate-->REACTIVE RED 195-->Reactive Blue 222 |
| Hazard Information | Back Directory | [Description]
2-Aminonaphthalene-1,5-disulfonic acid [117-62-4]. 5-sulfo-Tobias acid, C10H9NO6S2, Mr 303.32, is purified by crystallization of the dipotassium salt from water. Alkali fusion results in formation of 2-amino-5-hydroxynaphthalene-1-sulfonic acid. Sulfonation (40 % oleum, 100℃) gives 2-aminonaphthalene-1,5,7-trisulfonic acid. Heating with aqueous sulfuric acid produces 2-aminonaphthalene-5- sulfonic acid. The diazo compound is converted to 2-diazo-1-hydroxynaphthalene-5-sulfonic acid on treatment with alkaline hypochlorite. | [Chemical Properties]
BEIGE POWDER | [Uses]
?As a diazo component in orange and red azo reactive dyes, 2-Amino-1,5-naphthalenedisulfonic acid gives more bathochromic shades than Tobias acid. | [Production Methods]
Sulfonation of Tobias acid to produce 2-aminonaphthalene-5-sulfonic acid proceeds via 2-Aminonaphthalene-1,5-disulfonic acid, which is isolated from the quenched reaction mixture with careful avoidance of desulfonation. |
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