ChemicalBook > CAS DataBase List > Metanilic acid

Metanilic acid

Product Name
Metanilic acid
CAS No.
121-47-1
Chemical Name
Metanilic acid
Synonyms
3-AMINOBENZENESULFONIC ACID;phenylsulfamic acid;3-SULFOANILINE;ANILINE-3-SULFONIC ACID;aminobenzenesulfonicacid;metanilic;Metanilsure;Metanilc Acid;METANILIC ACID;Aniline-3-sulf
CBNumber
CB7143612
Molecular Formula
C6H7NO3S
Formula Weight
173.19
MOL File
121-47-1.mol
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Metanilic acid Property

Melting point:
>300 °C (lit.)
Density 
1.69
refractive index 
1.5500 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
ethanol: very slightly soluble(lit.)
form 
Powder
pka
3.73(at 25℃)
color 
White to grayish-beige
Water Solubility 
slightly soluble
Merck 
14,5927
BRN 
473264
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents, acids.
LogP
-2.77 at 21℃
CAS DataBase Reference
121-47-1(CAS DataBase Reference)
NIST Chemistry Reference
Metanilic acid(121-47-1)
EPA Substance Registry System
Metanilic acid (121-47-1)
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Safety

Hazard Codes 
Xn
Risk Statements 
20/21/22
Safety Statements 
23-28-28A-25
RIDADR 
3261
WGK Germany 
1
RTECS 
OY2300000
TSCA 
Yes
HazardClass 
IRRITANT
HS Code 
29214200
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
165794
Product name
3-Aminobenzenesulfonic acid
Purity
97%
Packaging
250g
Price
$92.4
Updated
2024/03/01
TCI Chemical
Product number
A0265
Product name
3-Aminobenzenesulfonic Acid
Purity
>99.0%(T)
Packaging
25g
Price
$21
Updated
2024/03/01
TCI Chemical
Product number
A0265
Product name
3-Aminobenzenesulfonic Acid
Purity
>99.0%(T)
Packaging
500g
Price
$92
Updated
2024/03/01
Alfa Aesar
Product number
A14574
Product name
Metanilic acid, 98+%
Packaging
100g
Price
$20.9
Updated
2021/12/16
TRC
Product number
A591695
Product name
3-Aminobenzenesulfonic acid
Packaging
25g
Price
$45
Updated
2021/12/16
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Metanilic acid Chemical Properties,Usage,Production

Chemical Properties

white powder

Uses

3-Aminobenzenesulfonic acid was used in the synthesis of cytocompatible sulfonated polyanilines. It was used in fabrication of novel glucose biosensor having large active surface area and excellent conductivity.

Uses

Metanilic acid was used in the synthesis of cytocompatible sulfonated polyanilines. It was used in fabrication of novel glucose biosensor having large active surface area and excellent conductivity. It undergoes microbial desulfonation to 3-aminophenol by Pseudomonas sp. strain S-313. It can be used to produce CN3O6(1-)*Cs(1+) and dicesium salt of N-nitrometanilic acid at temperature of 25°C.

Definition

ChEBI: 3-aminobenzenesulfonic acid is an aminobenzenesulfonic acid. It is a conjugate acid of a 3-aminobenzenesulfonate.

Production Methods

Metanilic acid can be obtained by sulfonation of aniline sulfate with oleum and boric acid at 20 – 50 ℃. The yield is 98%. For industrial production, however, nitrobenzene is sulfonated to m-nitrobenzenesulfonic acid, which is then reduced either with iron or catalytically with hydrogen. Crude 3-aminobenzenesulfonic acid can be used directly, either as a solution or dried, to obtain 3-aminophenol by alkali fusion. It is not sufficiently pure for use in dye manufacture, however. Therefore the crude solution is acidified; after filtration the product thus obtained is of satisfactory purity.

General Description

White powder. Small colorless needles; toxic.

Air & Water Reactions

Water insoluble [Hawley].

Reactivity Profile

Metanilic acid is an amino acid. Reacts weakly with both acids and bases.

Hazard

See aniline.

Fire Hazard

Flash point data for Metanilic acid are not available, however Metanilic acid is probably combustible.

Flammability and Explosibility

Non flammable

Purification Methods

Crystallise the acid from water (as the hydrate), under CO2 in a semi-darkened room. The solution is photosensitive. Dry it over 90% H2SO4 in a vacuum desiccator. [Beilstein 14 H 688, 14 IV 2640.]

Metanilic acid Preparation Products And Raw materials

Raw materials

Nicotinic acid FUMING SULFURIC ACID Iron filings Congo red paper Iron mud Sodium 3-nitrobenzenesulphonate Benzenesulfonic acid sodium salt Sulfur trioxide METANILIC ACID SODIUM SALT Light red Hydrochloric acid Nitrobenzene Iron Sulfuric acid Sodium carbonate

Preparation Products

cleaner LS METANIL YELLOW 3-ACETYLAMINO-BENZENESULFONYL CHLORIDE REACTIVE BLUE 4 Direct Blue 106 Reactive Navy Blue Ker disodium 4-[[2,4-diamino-5-[(3-sulphonatophenyl)azo]phenyl]azo]-2-[[2,6-dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]benzenesulphonate Mordant Brown 33 ACID BLUE 113 2-Amino-1,4-benzenedisulfonic acid Tracid Rubine 5bl SIRIUS YELLOW GC Reactive Orange 2 Reactive Orange 5 Reactive Brilliant Orange K-R REACTIVE BLUE 5 Acid Orange 116 Reactive Blue 49 Reactive Brilliant Orange K-7R ACID BLUE 120 3-Aminophenol Benzoic acid, 5-4-4-4-(4-amino-9,10-dihydro-9,10-dioxo-3-sulfo-1-anthracenyl)amino-2-sulfophenylamino-6-(phenylamino)-1,3,5-triazin-2-ylaminophenylazo-2-hydroxy-, trisodium salt REACTIVE RED 198 1-Aminoanthraquinone Reactive Blue 198 tetrasodium [mu-[[7,7'-(carbonyldiimino)bis[4-hydroxy-3-[(2-hydroxy-5-sulphophenyl)azo]naphthalene-2-sulphonato]](8-)]]dicuprate(4-) tetraammonium [mu-[[5,5'-[carbonylbis[imino(2-hydroxy-5-sulpho-p-phenylene)azo]]bis[6-hydroxynaphthalene-2-sulphonato]](8-)]]dicuprate(4-)
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View Lastest Price from Metanilic acid manufacturers

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
Product
Metanilic acid 121-47-1
Price
US $100.00-75.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000
Release date
2024-08-21
hebei hongtan Biotechnology Co., Ltd
Product
Metanilic acid 121-47-1
Price
US $30.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
2000kg
Release date
2024-05-16
Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Metanilic acid 121-47-1
Price
US $35.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/week
Release date
2024-05-29

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