ChemicalBook > CAS DataBase List > 1,5-Naphthalenedisulfonic acid

1,5-Naphthalenedisulfonic acid

Product Name
1,5-Naphthalenedisulfonic acid
CAS No.
81-04-9
Chemical Name
1,5-Naphthalenedisulfonic acid
Synonyms
ARMSTRONG ACID;Naphthalene-1,5-disulfonic acid tetrahydrate;29685;NSC 9588;1,5-NaphthaL;1,5-disulfonic acid;Cabalt trioxide, AR;1,5-Naphthalenedisul;Hexetidine EP Impurity D;Naphthalin-1,5-disulfonsure
CBNumber
CB8346027
Molecular Formula
C10H8O6S2
Formula Weight
288.3
MOL File
81-04-9.mol
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1,5-Naphthalenedisulfonic acid Property

Melting point:
242.5°C (rough estimate)
Boiling point:
400.53°C (rough estimate)
Density 
1.7040
vapor pressure 
0Pa at 25℃
refractive index 
1.5630 (estimate)
storage temp. 
Store below +30°C.
pka
-0.60±0.40(Predicted)
color 
Crystals or plates
Water Solubility 
90.52g/L at 25℃
LogP
-0.94
CAS DataBase Reference
81-04-9(CAS DataBase Reference)
EPA Substance Registry System
1,5-Naphthalenedisulfonic acid (81-04-9)
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Safety

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
22-24/25-45-36/37/39-26
RIDADR 
UN 2585
WGK Germany 
1
HazardClass 
8
PackingGroup 
III
HS Code 
2904100090
Toxicity
LD50 orl-rat: 30 g/kg GISAAA 45(3),73,80
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

H318Causes serious eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.40104
Product name
1,5-Naphthalenedisulfonic acid
Purity
for synthesis
Packaging
25g
Price
$44.2
Updated
2024/03/01
Sigma-Aldrich
Product number
8.40104
Product name
1,5-Naphthalenedisulfonic acid
Purity
for synthesis
Packaging
250G
Price
$121
Updated
2024/03/01
TRC
Product number
N378483
Product name
1,5-NaphthalenedisulfonicAcid
Packaging
1g
Price
$45
Updated
2021/12/16
Matrix Scientific
Product number
097414
Product name
Naphthalene-1,5-disulfonic acid
Purity
95+%
Packaging
25g
Price
$98
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0006239
Product name
1,5-NAPHTHALENEDISULFONIC ACID
Purity
95.00%
Packaging
25G
Price
$1227.91
Updated
2021/12/16
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1,5-Naphthalenedisulfonic acid Chemical Properties,Usage,Production

Chemical Properties

Naphthalene-1,5-disulfonic acid [81-04-9]. Armstrong acid, C10H8O6S2, Mr 288.28, crystallizes as the tetrahydrate but dehydrates at 125 ℃ to give the anhydrous acid (mp 240 – 245℃). The disulfonic acid forms an anhydride when treated with oleum below 50℃. This anhydride reacts with ammonia to give a mixture of naphthalene-1,5-disulfonamide and naphthalene-1- sulfonamide-5-sulfonic acid. Treatment of the disodium salt of naphthalene-1,5-disulfonic acid with phosphorus pentachloride at 110℃ gives naphthalene-1,5-disulfonyl chloride (mp 184 ℃), which may also be prepared by chlorosulfonation of naphthalene. Reaction of an aqueous solution of naphthalene-1,5-disulfonic acid with bromide – bromate gives 1,5-dibromonaphthalene so readily that the yellow precipitate may be used to identify very low concentrations of the disulfonic acid.

Uses

The disodium salt of naphthalene-1,5- disulfonic acid gives 1-hydroxynaphthalene-5- sulfonic acid or 1,5-dihydroxynaphthalene (see Section 3.3) by fusion processes. Further sulfonation of the disulfonated reaction mixture gives naphthalene-1,3,5-trisulfonic acid, and nitration leads to 1- and 2-nitronaphthalene-4,8-disulfonic acids as intermediates to the corresponding aminonaphthalene disulfonic acids. Naphthalene-1,5-disulfonic acid is an important stabilizer for diazo compounds.

Definition

ChEBI: Naphthalene-1,5-disulfonic acid is a naphthalenesulfonic acid.

Production Methods

Naphthalene is mixed with 20 % oleum at 20 – 35 C followed by gradual addition of 65 % oleum and further naphthalene alternately. After heating for 6 h at 55 C the reaction mixture is added to water, and the product is precipitated as the free acid by cooling or as the disodium salt by the addition of alkaline sodium sulfate. In each case, the isolated yield is ca. 53 %. The 1,6-disulfonic acid can be recovered from the filtrate. Higher yields of 4 have been reported for alternative processes; for example, solvent sulfonation with sulfur trioxide and chlorosulfonic acid in a solvent such as tetrachloroethylene [24] or sulfonation with oleum through a double screw-feed apparatus.

Flammability and Explosibility

Not classified

Safety Profile

Very low oral toxicity. Whenheated to decomposition it emits toxic fumes of SOx. Seealso SULFONATES.

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1,5-Naphthalenedisulfonic acid Suppliers

Wuhan Hongde Yuexin Pharmatech Co.,Ltd
Tel
027-83855393 15071227934
Fax
027-83855393
Email
3306264753@qq.com
Country
China
ProdList
3036
Advantage
58
Wuhan penglei Biotechnology Co., Ltd
Tel
13554168242
Email
445014292@qq.com
Country
China
ProdList
286
Advantage
58
Guangzhou Yuanda New Material Co., Ltd.
Tel
19849939632
Email
2470479589@qq.com
Country
China
ProdList
3871
Advantage
58
Tai 'an Huanyu Chemical Co., LTD
Tel
13176825516
Email
78995114@qq.com
Country
China
ProdList
75
Advantage
58
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
future industrial shanghai co., ltd
Tel
400-0066400 13621662912
Fax
021-55660885
Email
sales@jonln.com
Country
China
ProdList
1995
Advantage
65
TAIYUAN RHF CO.,LTD.
Tel
+86 351 7031519
Fax
+86 351 7031519
Email
sales@RHFChem.com
Country
China
ProdList
2338
Advantage
56
Beijing HwrkChemical Technology Co., Ltd
Tel
010-89508211 18501085097
Fax
010-89508210
Email
sales.bj@hwrkchemical.com
Country
China
ProdList
8415
Advantage
55
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44689
Advantage
61
JinYan Chemicals(ShangHai) Co.,Ltd.
Tel
13817811078
Fax
86-021-50426522,50426273
Email
sales@jingyan-chemical.com
Country
China
ProdList
9976
Advantage
60
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View Lastest Price from 1,5-Naphthalenedisulfonic acid manufacturers

hebei hongtan Biotechnology Co., Ltd
Product
1,5-Naphthalenedisulfonic acid 81-04-9
Price
US $30.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
2000kg
Release date
2024-03-26
WUHAN FORTUNA CHEMICAL CO., LTD
Product
1,5-Naphthalenedisulfonic acid 81-04-9
Price
US $0.00/KG
Min. Order
1KG
Purity
98.0%
Supply Ability
500kg/month
Release date
2023-01-10
Hebei Yanxi Chemical Co., Ltd.
Product
1,5-Naphthalenedisulfonic acid 81-04-9
Price
US $0.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-11-27

81-04-9, 1,5-Naphthalenedisulfonic acidRelated Search:


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