SulfanilicAcid , 0.8%(w/v)inGlacialAceticAcid , 121-57-3

Synonym(s):
4-Aminobenzenesulfonic acid;4-Aminobenzenesulfonic acid, Aniline-4-sulfonic acid;Aniline-4-sulfonic acid;Sulfanilic acid;Sulfanilic acid solution

CAS NO.：121-57-3

Empirical Formula: C6H7NO3S

Molecular Weight: 173.19

MDL number: MFCD00007886

EINECS: 204-482-5

Update time: 2022-07-08

PRODUCT Properties

Melting point:	>300 °C(lit.)
Boiling point:	288 ℃
bulk density	620kg/m3
Density	1.485
vapor pressure	0Pa at 25℃
refractive index	1.5500 (estimate)
storage temp.	Store below +30°C.
solubility	10g/l
pka	3.24(at 25℃)
form	solid
color	White to Off-White
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
LogP	-2.3 at 25℃
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)

Description and Uses

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.

Sulfanilic acid may be used for the functionalization of single-walled carbon nanotubes (SWNTs) with aryl sulfonate groups.

Safety

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H315-H317-H319
Precautionary statements	P261-P264-P272-P280-P302+P352-P305+P351+P338
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