J acid CAS#87-02-5

CAS Number: 87-02-5
Chemical Formula:C10H9NO4S
Synonyms:

7-amino-4-hydroxy-2-naphthalenesulfonicaci
kyselina6-amino-1-naftol-3-sulfonova
kyselinai

Appearance: Yellow Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

J acid CAS#87-02-5

Gray needles, white when pure. Soluble in hot water; sparingly soluble in cold water. 2-Amino-5-hydroxynaphthalene-7-sulfonic acid [87-02-5]. (7-amino-4-hydroxynaphthalene-2-sulfonic acid), J acid, C10H9NO4S, Mr 239.2, is only slightly soluble (0.1 %) in cold water but readily soluble at 100℃. The alkalimetal salts are readily soluble in water. Diazo compounds are normally coupled with J acid under alkaline conditions with reaction in the 6-position (ortho to hydroxyl); however, under acid conditions, coupling can occur in the 1- position. Reaction with bisulfite gives 4,7-dihydroxynaphthalene-2-sulfonic acid. The N-acylation, Nalkylation, and N-arylation reactions are important.

J acid Chemical Properties

density	1.4338 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.6500 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	Slightly soluble in water
pka	-0.28±0.40(Predicted)
form	powder
color	yellow
Water Solubility	5g/L at 20℃
InChI	InChI=1S/C10H9NO4S/c11-7-1-2-9-6(3-7)4-8(5-10(9)12)16(13,14)15/h1-5,12H,11H2,(H,13,14,15)
InChIKey	KYARBIJYVGJZLB-UHFFFAOYSA-N
SMILES	C1=C2C(C=CC(N)=C2)=C(O)C=C1S(O)(=O)=O
LogP	-1.39
CAS DataBase Reference	87-02-5(CAS DataBase Reference)
EPA Substance Registry System	7-Amino-4-hydroxy-2-naphthalenesulfonic acid (87-02-5)

Safety Information

Hazard Codes	C
Risk Statements	34
Safety Statements	26-27-36/37/39
RIDADR	UN 2585 8/PG 3
WGK Germany	1
RTECS	QK1295500
F	21
TSCA	TSCA listed
HazardClass	8
PackingGroup	III
HS Code	2922190090
Storage Class	11 - Combustible Solids
Toxicity	LD50 oral in rat: 11500mg/kg