1,5-Naphthalenedisulfonic acid
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1,5-Naphthalenedisulfonic acid
structure -
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CAS No:
81-04-9
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Formula:
C10H8O6S2
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Chemical Name:
1,5-Naphthalenedisulfonic acid
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Synonyms:
1,5-Naphthalenedisulfonic acid;Armstrong's acid;Napadisylic acid;NSC 9588;Naphthalene-1,5-disulfonic acid;46874-44-6;1431794-74-9
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CAS No:
1,5-Naphthalenedisulfonic acid Basic Attributes
288.3
288.30
216-732-0
E8FPK78470
9588
DTXSID5046982
2904100000
Characteristics
126
3.49480
Light yellow crystale
1.704 g/cm3
242.5 °C (decomp)
400.53°C (rough estimate)
1.695
Oral-rat LD50: 30000 mg/kg; Oral-Mouse LD50: 47 mg/kg
Flammable; burning produces toxic sulfur oxide fumes
Safety Information
III
8
UN 2585
1
34
22-24/25-45-36/37/39-26
C
Warehouse ventilated, low temperature and dry
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
H314
|Danger|H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, and P501|Aggregated GHS information provided by 8 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
1,5-Naphthalenedisulfonic acid Use and Manufacturing
It is derived from naphthalene sulfonation. Add about 500kg of 20% fuming sulfuric acid into the sulfonation pot, slowly add 210kg of fine naphthalene powder in 1.5h under stirring, control the temperature at 25-30℃, and stir for half an hour. Raise the temperature to 40°C, keep it for 1 hour, and react until all the materials can be dissolved. Cool down to below 20℃, add 1700-1720kg 20% sulfuric acid slowly and then quickly within 10h, and the temperature is still controlled at 25-30℃. After adding, stir for 4h. The reactant was put into 20% sodium chloride, cooled and filtered. The filter cake is dissolved in hot water, adjusted to neutral with sodium hydroxide solution, filtered, and dried to obtain 1, 5-naphthalenedisulfonic acid.
For dye synthesis
1,5-Naphthalenedisulfonic acid: ACTIVE
Computed Properties
Molecular Weight:288.3
XLogP3:0.6
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:2
Exact Mass:287.97623032
Monoisotopic Mass:287.97623032
Topological Polar Surface Area:126
Heavy Atom Count:18
Complexity:450
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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Business licensed Certified factoryManufactory Supplier of Flavors & Fragrances,Catalyst & Auxiliary,Intermediates,Dyes & Pigments,Inorganic Chemistry,petro chemicals,Surfactant,Food Additives,Water Treatment ChemicalsInquiryCAS No.: 81-04-9Grade: Industrial GradeContent: 99% -
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