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NAPHTHIONIC ACID SODIUM SALT

4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate

CAS: 130-13-2

Molecular Formula: C10H10NNaO3S

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NAPHTHIONIC ACID SODIUM SALT - Names and Identifiers

Name 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate
Synonyms SODIUM NAPTHIONATE
Sodium Naphthionate
SODIUM NAPHTHIONATE
Naphthoic Acid Sodium Salt
NAPHTHIONIC ACID SODIUM SALT
4-aminonaphthalene-1-sulfonate
PARA-NAPHTHIONIC ACID, NA SALT
SODIUM 1-NAPHTHYLAMINE-4-SULFONATE
SODIUM 4-AMINO-1-NAPHTHALENESULFONATE
sodium 4-aminonaphthalene-1-sulfonate
Sodium 4-amino-1-naphthalenesulfonate
sodium 4-aminonaphthalene-1-sulphonate
NAPHTHIONIC ACID SODIUM SALT 0.5-WATER
NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT
1-Naphthylamine-4-sulfonic acid, sodium salt
4-Amino-1-naphtalenesulfonic acid sodium salt
4-Amino-1-naphthalenesulfonic acid sodium salt
4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate
CAS 130-13-2
EINECS 204-975-5
InChI InChI=1/C10H9NO3S/c11-9-5-6-10(15(12,13)14)8-4-2-1-3-7(8)9/h1-6H,11H2,(H,12,13,14)/p-1
InChIKey JWSRMCCRAJUMLX-UHFFFAOYSA-M

NAPHTHIONIC ACID SODIUM SALT - Physico-chemical Properties

Molecular FormulaC10H10NNaO3S
Molar Mass247.24
Density1.6703
Melting Point280°C (dec.)(lit.)
AppearancePink to light grayish purple powder
ColorWhite to Gray to Brown
Merck14,6403
PH6.8-7.0 (10g/l, H2O, 20°C)
Storage ConditionStore below +30°C.
SensitiveAir, light and humidity sensitivity
MDLMFCD00044844
Physical and Chemical Properties

white or off-white flaky crystals. Soluble in water, soluble in 95% ethanol, insoluble in ether, a small amount of concentrated aqueous caustic solution and ethanol solution.

Melting Point: 280°C (dec.)(lit.)
density: 1.6703
Merck: 6403
CAS DataBase: 130-13-2(CAS DataBase Reference)
EPA chemical Substance information: 130-13-2(EPA Substance)

UseFor the preparation of acidic, direct dyes and edible red pigment, also used as an antidote for nitrite and iodine poisoning

NAPHTHIONIC ACID SODIUM SALT - Risk and Safety

Hazard SymbolsXi - Irritant
Irritant
Risk Codes36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany3
FLUKA BRAND F CODES3-8-23
HS Code29214500

NAPHTHIONIC ACID SODIUM SALT - Nature

Open Data Verified Data

1-Naphthylamine -4-sulfonic acid is a white crystal or powder that loses water at 100 °c. The anhydrous was carbonized without melting at 280-300 °c. Rose in the air. The relative density was 1. 6703. Its sodium salt contains two or four molecules of crystal water. Sodium salt containing four molecules of crystal water is white or gray-white crystals, slightly sweet, soluble in water, aqueous solution with blue fluorescence, soluble in 95% ethanol, insoluble in ether, dissolved in a small amount of concentrated aqueous caustic and ethanol solution. The pH of the 1% aqueous solution was 6.8. Decomposition when heated.

Last Update：2025-06-10 22:55:16

NAPHTHIONIC ACID SODIUM SALT - Preparation Method

Open Data Verified Data

by 1 a naphthylamine and sulfuric acid in trichlorobenzene in 180~190 deg C reaction to generate 1 a naphthylamine sulfate, continue at about 224 deg C heat preservation, make it into 1-1-naphthylamine -4-sulfonic acid, then sodium carbonate and sodium salt solution, using trichlorobenzene as solvent, the product unreacted raw materials
1 A naphthylamine was extracted. The reaction product is concentrated, filtered and crystallized to obtain a finished product.

Last Update：2022-01-01 10:56:25

NAPHTHIONIC ACID SODIUM SALT - Application

Open Data Verified Data

azo dye intermediates, used in the production of acid, direct and acid red dyes, can also be used as nitrite and iodine poisoning antidote.

Last Update：2025-08-19 16:24:40

NAPHTHIONIC ACID SODIUM SALT - Safety

Open Data Verified Data
  • toxic, inhalation, swallowing or absorption through the skin can cause poisoning. Attention should be paid to the production process to take Protection Measure, the production site should maintain good ventilation, the operator should wear protective equipment.
  • The bag is lined with plastic bags or double plastic bags. 50kg per bag. Store in a cool, ventilated, dry place. Handling should be prevented from being broken. Protect against sun exposure and moisture during transport and keep away from fire. According to the provisions of the storage and transportation of toxic chemicals.
Last Update：2025-06-10 22:55:16

NAPHTHIONIC ACID SODIUM SALT - Reference Information

dissociation constant 0 at 30 ℃
EPA chemical information Information provided by: ofmpub.epa.gov (external link)
Use Used to prepare acidic, direct dyes and edible red pigments, and also used as an antidote to nitrite and iodine poisoning
Last Update：2024-04-10 22:29:15
NAPHTHIONIC ACID SODIUM SALT
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Shanghai Macklin Biochemical Co., Ltd
Featured ProductsSpot supply
Product Name: Sodium 4-aminonaphthalene-1-sulfonate Visit Supplier Webpage Request for quotation
CAS: 130-13-2
Tel: +86-18821248368
Email: Int06@meryer.com
Mobile: +86-18821248368
QQ: 495145328 Click to send a QQ message
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CHEMBSF (Shanghai) Biomedical Technology Co., Ltd
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CAS: 130-13-2
Tel: 021-60556179
Email: 18721521379@163.com
Mobile: +86-18721521379
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JIANGSU BSECHEM CHEMICAL TECHNOLOGY CO., LTD.
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Product Name: 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate Request for quotation
CAS: 130-13-2
Tel: +86-17505207175
Email: 3787852685@qq.com
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Nantong Reform Petro-Chemical CO., LTD.
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Product Name: 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate Request for quotation
CAS: 130-13-2
Tel: +86-13776910623
Email: r@reformchem.com­
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Guangzhou Yuanda New Material Co.,Ltd
Multiple Specifications
Product Name: Sodium 4-amino-1-naphthalenesulfonate Request for quotation
CAS: 130-13-2
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589 Click to send a QQ message
Shanghai Amole Biotechnology Co., Ltd.
Spot supply
Product Name: Sodium 4-Amino-1-naphthalenesulfonate Tetrahydrate Request for quotation
CAS: 130-13-2
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365 Click to send a QQ message
Wechat: 18916960931
Changsha Changtang import and Export Co., Ltd.
Product Name: 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate Request for quotation
CAS: 130-13-2
Tel: +86 18942506900
Email: lilyqu@chemoway.com
Mobile: +86 18942506900
QQ: 3182628472 Click to send a QQ message
Wechat: +86 18942506900
WhatsApp: +86 18942506900
Linkedin: +86 18942506900
SHANGHAI ACMEC BIOCHEMICAL TECHNOLOGY CO., LTD.
Spot supply
Product Name: Sodium 4-Amino-1-naphthalenesulfonate Tetrahydrate Visit Supplier Webpage Request for quotation
CAS: 130-13-2
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922 Click to send a QQ message
Wechat: 18621343501
WhatsApp: +86-18621343501
SKYRUN INDUSTRIAL CO.,LTD
Spot supply
Product Name: 1-methyl-aminomethyl-naphthalene Visit Supplier Webpage Request for quotation
CAS: 130-13-2
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185 Click to send a QQ messageSend QQ message
Wechat: chinaskyrun
Hefei TNJ Chemical Industry Co.,Ltd.
Product Name: 4-Amino-1-naphthalenesulfonic acid, sodiumsalt, hydrate Request for quotation
CAS: 130-13-2
Tel: 0086-551-65418684
Email: sales@tnjchem.com
　　　　 info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840 Click to send a QQ message
Wechat: 189 4982 3763
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