4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt
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4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt
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CAS No:
5460-09-3
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Formula:
C10H9NO7S2.Na
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Chemical Name:
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt
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Synonyms:
2,7-Naphthalenedisulfonic acid,4-amino-5-hydroxy-,sodium salt (1:1);2,7-Naphthalenedisulfonic acid,4-amino-5-hydroxy-,monosodium salt;8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt;1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid monosodium salt;Ash acid;H acid monosodium salt;1-Amino-8-naphthol-3,6-disulfonic acid monosodium salt;Sodium 8-amino-1-naphthol-3,6-disulfonate;4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt;Monosodium 1-naphthol-8-amino-3,6-disulfonate;Monosodium 4-amino-5-hydroxy-2,7-naphthalenedisulfonate
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CAS No:
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt Basic Attributes
359.31
339.956696
226-736-4
DTXSID4027600|DTXSID5046980
2922199090
Characteristics
183.81000
2.95690
Dark Gray Powder
1.88g/cm3
>300°C
H2O: slightly soluble
Refrigerator
Safety Information
36/37/38
24/25
Not Classified| |Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 38 companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt Use and Manufacturing
The production of monosodium H acid from naphthalene as raw material includes the following steps: (1) sulfonation of naphthalene to obtain 1, 3, 6-naphthalenesulfonic acid; (2) nitration of 1, 3, 6-naphthalenetrisulfonic acid to generate 1-nitro -3, 6, 8-naphthalene trisulfonic acid, and make the nitrification mixture depleted of nitrogen dioxide; (3) The nitration mixture is neutralized with ammonia water; (4) The neutralized product nitronaphthalene trisulfonate triammonium salt is reduced and used Sulfuric acid and common salt precipitate the reductive acidification product T acid; (5) The T acid is converted into sodium salt, which is obtained by alkali melting and acid precipitation to obtain H acid monosodium salt: there are many steps to prepare H acid monosodium salt from naphthalene, and the total yield Generally 46%-50%. The industrial products are light gray to gray paste, and the content of monosodium H acid salt is 42%. The content of monosodium H acid powder is more than 83.5% (GB-1648-84)
This product is an important dye intermediate.
Intermediates
Synthetic dye and pigment manufacturing|2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, sodium salt (1:1): ACTIVE
Computed Properties
Molecular Weight:359.3
Hydrogen Bond Donor Count:4
Hydrogen Bond Acceptor Count:9
Rotatable Bond Count:2
Exact Mass:358.97455291
Monoisotopic Mass:358.97455291
Topological Polar Surface Area:176
Heavy Atom Count:22
Complexity:567
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes
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4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt
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