121-57-3

Product Name: Sulfanilic acid

Formula: C6H7NO3S

Synonyms: 4-Aminobenzenesulfonic acid;4-Aminobenzenesulfonic acid, Aniline-4-sulfonic acid;Aniline-4-sulfonic acid;Sulfanilic acid;Sulfanilic acid solution

Inquiry

CHEMICAL AND PHYSICAL PROPERTIES SAFETY INFORMATION COMPUTED DESCRIPTORS PRODUCT INTRODUCTION RELATED SUPPLIERS

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	4-aminobenzene sulfonic acid appears as white powder with faint purple tinge. Grayish-white flat crystals. Becomes anhydrous at around 212 °F. Low toxicity (used medicinally).
Color/Form	Orthorhombic plates or monoclinic from water
Melting Point	Decomposes without melting at 550 °F (NTP, 1992)
Solubility	less than 1 mg/mL at 68 °F (NTP, 1992)
Density	1.485 at 77 °F (NTP, 1992) - Denser than water; will sink
Vapor Pressure	0.0000002 [mmHg]
LogP	log Kow = -2.16
Decomposition	When heated to decomposition it emits toxic vapors of /nitrogen oxides and sulfur oxides/.
Dissociation Constants	pKa = 3.25 at 25 °C; pKa = 3.34 at 15 °C
Other Experimental Properties	Orthorhombic plates from water; decomposes without melting at about 288 °C (Also reported as greater than 360 °C); almost insoluble in ethanol, ether, benzene; slightly soluble in hot methanol; K2 at 25 °C: 5.93x10-4 /Sulfanilic acid monohydrate/
Chemical Classes	Nitrogen Compounds -> Aminobenzenesulfonic Acids

SAFETY INFORMATION

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H317:Sensitisation, Skin H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P272:Contaminated work clothing should not be allowed out of the workplace. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight	173.19 g/mol
XLogP3	-0.6
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	1
Exact Mass	173.01466426 g/mol
Monoisotopic Mass	173.01466426 g/mol
Topological Polar Surface Area	88.8 Å²
Heavy Atom Count	11
Formal Charge	0
Complexity	211
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently-Bonded Unit Count	1
Compound Is Canonicalized	Yes

PRODUCT INTRODUCTION

description

4-aminobenzene sulfonic acid appears as white powder with faint purple tinge. Grayish-white flat crystals. Becomes anhydrous at around 212 °F. Low toxicity (used medicinally).