2-Amino-4,8-naphthalenedisulfonic acid
- Product Name
- 2-Amino-4,8-naphthalenedisulfonic acid
- CAS No.
- 131-27-1
- Chemical Name
- 2-Amino-4,8-naphthalenedisulfonic acid
- Synonyms
- acidiv;C ACID;kyselinac;AMINO C ACID;CASSELLA ACID;JACS-131-27-1;2-Amino-4,8-naphthal;4,8-disulfo-2-naphthalamine;4,8-Disulfo-2-naphthylamine;2-Ethylamino-4,8-dinaphthalene
- CBNumber
- CB5200922
- Molecular Formula
- C10H9NO6S2
- Formula Weight
- 303.31
- MOL File
- 131-27-1.mol
2-Amino-4,8-naphthalenedisulfonic acid Property
- Boiling point:
- 205.8°C (rough estimate)
- Density
- 1.6329 (rough estimate)
- refractive index
- 1.7330 (estimate)
- storage temp.
- 2-8°C
- pka
- -1.16±0.40(Predicted)
- CAS DataBase Reference
- 131-27-1(CAS DataBase Reference)
- EPA Substance Registry System
- 1,5-Naphthalenedisulfonic acid, 3-amino- (131-27-1)
Safety
- Risk Statements
- 36/37/38
- Safety Statements
- 26-36/37/39
- Toxicity
- rat,LD50,oral,11400mg/kg (11400mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1058, 1986.
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352IF ON SKIN: wash with plenty of soap and water.
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.
P330Rinse mouth.
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P337+P313IF eye irritation persists: Get medical advice/attention.
P362Take off contaminated clothing and wash before reuse.
P403+P233Store in a well-ventilated place. Keep container tightly closed.
P405Store locked up.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- FA40997
- Product name
- 2-Amino-4,8-naphthalenedisulfonic acid
- Packaging
- 100g
- Price
- $60
- Updated
- 2021/12/16
- Product number
- FA40997
- Product name
- 2-Amino-4,8-naphthalenedisulfonic acid
- Packaging
- 250g
- Price
- $100
- Updated
- 2021/12/16
- Product number
- FA40997
- Product name
- 2-Amino-4,8-naphthalenedisulfonic acid
- Packaging
- 500g
- Price
- $180
- Updated
- 2021/12/16
- Product number
- 094178
- Product name
- 3-Aminonaphthalene-1,5-disulfonic acid
- Purity
- 92+%
- Packaging
- 1g
- Price
- $189
- Updated
- 2021/12/16
- Product number
- FA40997
- Product name
- 2-Amino-4,8-naphthalenedisulfonic acid
- Packaging
- 1kg
- Price
- $240
- Updated
- 2021/12/16
2-Amino-4,8-naphthalenedisulfonic acid Chemical Properties,Usage,Production
Chemical Properties
2-Aminonaphthalene-4,8-disulfonic acid [131-27-1]. (3-aminonaphthalene-1,5-disulfonic acid), Cassella acid, C acid, C10H9NO6S2, Mr 303.32, and its salts are readily soluble in water. Reduction with sodium amalgam desulfonates 2-Aminonaphthalene-4,8-disulfonic acid to give 2-aminonaphthalene-8-sulfonic acid, whereas boiling with dilute sulfuric acid results in desulfonation and hydrolysis to give 2- hydroxynaphthalene-4-sulfonic acid. Alkali fusion (KOH, 215℃) produces 2-amino-4-hydroxynaphthalene-8-sulfonic acid.
Uses
2-Amino-4,8-naphthalenedisulfonic Acid is used in green preparation method of direct blended blue D 3GL.
Uses
Cassella acid is an important diazo component for yellow direct and reactive dyes.
Production Methods
The iron(II) salt of 3-nitronaphthalene-1,5-disulfonic acid (nitro-Armstrong acid) is reduced with iron in dilute acid. A claimed improvement involves isolation of nitro-Armstrong acid from the nitration products of naphthalene-1,5-disulfonic acid as the crystalline magnesium salt prior to catalytic reduction to C acid.
2-Amino-4,8-naphthalenedisulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2-Amino-4,8-naphthalenedisulfonic acid manufacturers
- Product
- 2-Amino-4,8-naphthalenedisulfonic acid 131-27-1
- Price
- US $30.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 1000tons
- Release date
- 2023-08-04
- Product
- 2-Amino-4,8-naphthalenedisulfonic acid 131-27-1
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- Customized
- Release date
- 2018-12-22