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Sulfanilic acid

Product Name
Sulfanilic acid
CAS No.
121-57-3
Chemical Name
Sulfanilic acid
Synonyms
faniL;NSC 7170;sulfanilic;4-SULFOANILINE;SUFANILIC ACID;Sulfanilsaeure;p-Sulfoaniline;SULFANILIC ACID;SulfonamineAcid;SULFANILLIC ACID
CBNumber
CB1489237
Molecular Formula
C6H7NO3S
Formula Weight
173.19
MOL File
121-57-3.mol
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Sulfanilic acid Property

Melting point:
>300 °C(lit.)
Density 
1.485
refractive index 
1.5500 (estimate)
storage temp. 
Store below +30°C.
solubility 
10g/l
pka
3.24(at 25℃)
form 
solid
PH
2.5 (10g/l, H2O, 20℃)
Water Solubility 
0.1 g/100 mL (20 ºC)
Merck 
14,8926
BRN 
908765
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
HVBSAKJJOYLTQU-UHFFFAOYSA-N
CAS DataBase Reference
121-57-3(CAS DataBase Reference)
NIST Chemistry Reference
Benzenesulfonic acid, 4-amino-(121-57-3)
EPA Substance Registry System
Sulfanilic acid (121-57-3)
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Safety

Hazard Codes 
C,Xi
Risk Statements 
36/38-43-34
Safety Statements 
26-36/37/39-45-37-24-36/37
RIDADR 
UN 2790 8/PG 3
WGK Germany 
1
RTECS 
WP3895500
Autoignition Temperature
>400 °C
TSCA 
Yes
HS Code 
29214210
Hazardous Substances Data
121-57-3(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 12300 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P272Contaminated work clothing should not be allowed out of the workplace.

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

P321Specific treatment (see … on this label).

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

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

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.22338
Product name
Sulfanilic acid
Purity
for synthesis
Packaging
100 g
Price
$23.12
Updated
2021/03/22
Sigma-Aldrich
Product number
251917
Product name
Sulfanilic acid
Purity
ACS reagent, 99%
Packaging
25g
Price
$26.3
Updated
2021/03/22
Sigma-Aldrich
Product number
39441
Product name
Nitrate Reagent B
Purity
suitable for microbiology
Packaging
100 mL
Price
$36
Updated
2021/03/22
Sigma-Aldrich
Product number
1.00684
Product name
Sulfanilic acid
Purity
for elemental analysis
Packaging
5 g
Price
$65.12
Updated
2021/03/22
Sigma-Aldrich
Product number
8.22338
Product name
Sulfanilic acid
Purity
for synthesis
Packaging
1 kg
Price
$67.43
Updated
2021/03/22
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Sulfanilic acid Chemical Properties,Usage,Production

Description

Sulfanilic acid (4-amino benzene sulfonic acid ) is an off-white crystalline solid which finds application in quantitative analysis of nitrate and nitrite ions. The solid acid exists as a zwitterion, and has an unusually high melting point.

Chemical Properties

greyish-white crystals or powder

Uses

A toxic metabolite of Tartrazine (T007700). Used as Ehrlich’s reagent, for detecting of nitrites. Antibacterial.

Definition

ChEBI: An aminobenzenesulfonic acid that is aniline sulfonated at the para-position.

Application

As the compound readily form diazo compounds, it is used to make dyes and sulpha drugs . This property is also used for the quantitative analysis of nitrate and nitrite ions by diazonium coupling reaction with N-(1-Naphthyl) ethylene diamine , resulting in an azo dye, and the concentration of nitrate or nitrite ions were deduced from the color intensity of the resulting red solution by colorimetry.
It is also used as a standard in combustion analysis.

General Description

White powder with faint purple tinge. Grayish-white flat crystals. Becomes anhydrous at around 212°F. Low toxicity (used medicinally).

Air & Water Reactions

Insoluble in water.

Reactivity Profile

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

Fire Hazard

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

Chemical Synthesis

Sulfanilic acid can be produced by sulfonation of aniline.

Purification Methods

Crystallise the acid (as dihydrate) from boiling water. Dry it at 105o for 2-3hours, then over 90% H2SO4 in a vacuum desiccator. The S-benzylisothiuronium salt has m 187o (from aqueous EtOH). [Beilstein 14 IV 2655.]

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Sulfanilic acid Suppliers

Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
021-20337333-801
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
24980
Advantage
65
Wuhan Xinyangruihe Chemical Technology Co., Ltd.
Tel
027-83850377-
Fax
027-83850375
Email
2395204132@qq.com
Country
China
ProdList
2513
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15877
Advantage
69
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24555
Advantage
81
Beijing dtftchem Technology Co., Ltd.
Tel
13651141086; 86(10)60275028、60275820
Fax
86 (10) 60270825
Email
dtftchem@sina.com
Country
China
ProdList
3392
Advantage
62
Energy Chemical
Tel
021-58432009-
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
43494
Advantage
61
Puyang Huicheng Electronic Material Co. Ltd.
Tel
0393-8910800-
Fax
0393-8912775
Email
info@huichengchem.com
Country
China
ProdList
487
Advantage
64
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View Lastest Price from Sulfanilic acid manufacturers

Wuhan Monad Medicine Tech Co.,LTD
Product
Sulfanilic acid 121-57-3
Price
US $10.00/KG
Min. Order
1KG
Purity
99.99%
Supply Ability
200 tons/month
Release date
2020-12-29
Wuhan wingroup Pharmaceutical Co., Ltd
Product
Sulfanilic acid 121-57-3
Price
US $10.00/KG
Min. Order
500g
Purity
99%
Supply Ability
2000MT/Month
Release date
2021-07-06
Zhuozhou Wenxi import and Export Co., Ltd
Product
Para Amino Phenyl Sulfonyl Acid/Sulfanilic acid 121-57-3
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-10

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