| Identification | More | [Name]
2-Amino-1,4-benzenedisulfonic acid | [CAS]
98-44-2 | [Synonyms]
1-amino-2,5-benzenedisulfonic acid
2,5-DISULFOANILINE
2-AMINO-1,4-BENZENEDISULFONIC ACID
2-AMINO-1,4-DISULFOBENZENE
2-AMINO-P-BENZENEDISULFONIC ACID
4-SULFOMETANILIC ACID
ANILINE 2:5 DISULFONIC ACID
ANILINE-2,5-DISULFONIC ACID
ANILINE-2,5-DISULPHONIC ACID
1-anilino-2,5-disulfonicacid
2,5-disulfo-1-aminobenzene
2-amino-1,4-benzenedisulfonic
2-amino-4-benzenedisulfonicacid
2-amino-benzene-1,4-disulfonicacid
2-Amino-p-benzenedislfonicacid
2-amino-p-benzenedisulfonicaci
4-Benzenedisulfonicacid,2-amino-1
kyselinaanilin-2,5-disulfonova
2-aminobenzene-1,4-disulphonic acid
Aniline-2,5-disulfonicacid,95% | [EINECS(EC#)]
202-669-6 | [Molecular Formula]
C6H7NO6S2 | [MDL Number]
MFCD00035753 | [Molecular Weight]
253.25 | [MOL File]
98-44-2.mol |
| Chemical Properties | Back Directory | [Appearance]
off-white powder | [Melting point ]
>300°C | [Boiling point ]
497.5℃[at 101 325 Pa] | [density ]
1.569 (estimate) | [refractive index ]
1.5500 (estimate) | [storage temp. ]
Keep in dark place,Inert atmosphere,Room temperature | [solubility ]
Aqueous Acid (Slightly), Water (Slightly) | [form ]
Solid | [pka]
-1.15±0.50(Predicted) | [color ]
White to Off-White | [Water Solubility ]
Slightly soluble in water. | [LogP]
-3.43 at 25℃ | [CAS DataBase Reference]
98-44-2(CAS DataBase Reference) | [EPA Substance Registry System]
98-44-2(EPA Substance) |
| Safety Data | Back Directory | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RTECS ]
CZ9250000 | [TSCA ]
Yes | [REACH Registrations]
Active |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
Sodium chloride-->Fuming sulfuric acid-->Metanilic acid-->Nicotinic acid | [Preparation Products]
Reactive Blue 14-->Reactive Orange 1-->Reactive blue 40-->1,4-Benzenedisulfonic acid, 2-[[4-[[4-[(2,4-diamino-5-nitrophenyl)azo]-6-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-, trisodium salt-->tetrasodium 2-[[4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonate-->pentasodium 3-[[4-[[4-[[4-chloro-6-[(3-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2,5-dimethylphenyl]azo]-2,5-disulphonatophenyl]azo]-4-hydroxy-5-(phenylamino)naphthalene-2,7-disulphonate-->Direct Blue 82-->DIRECT BLUE 78-->Reactive Orange 20-->Direct blue 83 (C.I. 34230)-->Benzoic acid, 5-[[4'-[[8-amino-7-[(2,5-disulfophenyl)azo]-1-hydroxy-5-sulfo-2-naphthalenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, tetrasodium salt-->Reactive Blue 255-->C.I. Reactive orange 35-->Reactive Black 39-->REACTIVE BLUE 109-->Reactive Orange 113-->C.I. Reactive brown 44-->Reactive brown 45 |
| Hazard Information | Back Directory | [Chemical Properties]
off-white powder | [Uses]
Aniline-2,5-disulfonic acid is used as pharmaceutical intermediate. | [Uses]
Intermediate. | [Production Methods]
2-Amino-1,4-benzenedisulfonic acid is obtained by sulfonating metanilic acid in 100% sulfuric acid with 50% oleum at 160 ℃ (5 – 6 h); the sulfonation mixture is diluted with water, lime is added, and the resulting calcium sulfate is removed; the product is then precipitated with excess concentrated hydrochloric acid in hot solution; yield 90 – 91%
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| Company Name: |
Alfa Aesar
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400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Energy Chemical
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400-0056266 |
| Website: |
www.energy-chemical.com |
| Company Name: |
China Langchem Inc.
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| Telephone: |
0086-21-58956006 |
| Website: |
www.chemicalbook.com/ShowSupplierProductsList19141/0_EN.htm |
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