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Sulfanilic Acid CAS#121-57-3

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Chemical Name：Sulfanilic acid

CAS No.:121-57-3

Molecular Formula:C6H7NO3S

Molecular weight:173.19

Sample: Available

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Product Details

Products Description of Sulfanilic acid CAS#121-57-3

White or off-white crystal. Hydrates lose water at 100°C, and anhydrous substances begin to decompose and carbonize at 280°C. Relative density 1.485 (25/4). Slightly soluble in cold water, insoluble in ethanol, ether and benzene, significantly acidic, soluble in caustic soda solution and sodium carbonate solution.

Sulfanilic acid Chemical Properties

Melting point	>300 °C(lit.)
Boiling point	288 ℃
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)

Safety Information

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

Product Application of Sulfanilic acid CAS#121-57-3

Para-aminobenzene sulfonic acid is mainly used in the manufacture of dyes, printing and dyeing auxiliaries, prevention and control of wheat rust, and as intermediates for spices, food colorings, medicines, whitening agents, pesticides, etc. It can be used as benchmark reagents, experimental reagents and chromatographic analysis Reagents used in organic synthesis and chemical analysis processes.

Determine ammonia, cerium, and nitrite, and determine aluminum, magnesium, potassium, sodium, iodine, iodide, and nitrite. Elemental analysis standards for carbon, hydrogen, nitrogen, oxygen and sulfur. Used with 1-naphthylamine to determine nitrite, test osmium and ruthenium, indirectly determine potassium through potassium nitrite, determine serum bilirubin, and soil analysis.

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