J acid 87-02-5

J-acid (7-amino-4-hydroxy-2-naphthalenesulfonic acid) is an important dye intermediate widely used in the production of direct dyes, acid dyes, and reactive dyes.

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Model:
87-02-5
Brand:
futurechemical
Code:
87-02-5

Product Description

J acid Basic information
Product Name:	J acid
CAS:	31813
MF:	C10H9NO4S
MW:	239.25
EINECS:	201-718-9
Mol File:	87-02-5.mol
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)

J acid C10H9NO4S 87-02-5 Azo dye synthesis Color developing reagent Hydrophilic coating material

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.