• Light Brown Physical Appearance
• Solid Forms – Easy to use
• Soluble In Dilute Alkaline Media

Product Specifications of OAPSA

Synonyms	OAPSA Ortho amino phenol para sulphonic Acid 2 Amino phenol 4-sulphonic Acid 2-Hydroxy-5-sulfoaniline 2-Amino-4-sulfophenol 4-Hydroxymetanilic Acid
CAS Number	98-37-3
EC Number	202-662-8
Molecular Formula	C6H7NO4S
IUPAC Name	3-amino-4-hydroxybenzenesulfonic acid
Molecular Weight	189.19 g/mol
Physical State / Form	Solid Form
Physical Appearance	Light Brown
Purity	NV : Min – 90% HPLC : Min – 98%
Solubility	Soluble In Dilute Alkaline Media
Insoluble	0.20 Max
Melting Point	300 °C
Boiling Point	398 °C
Packing	25 Kgs Bags Packing
HSN Code	29222921

Safety & First Aid Information Of OAPSA

Inhalation	Remove victim to fresh air and keep at rest in a position comfortable for breathing.
Skin Contact	Remove contaminated clothing and shoes. Wash contaminated clothing thoroughly with water before removing it, or wear gloves. Get medical attention ,In the event of any complaints or symptoms, avoid further exposure.
Eye Contact	Immediately flush eyes with plenty of water .If easy to do, remove contact lens, if worn. If eye irritation persists: Get medical advice/ attention
Ingestion	Immediately make victim drink water (two glasses at most). Consult a physician

Handling & Storage Of OAPSA

Storage

Store in a dry, cool and well-ventilated area, away from incompatible materials. Keep bags tightly closed and sealed until ready for use. Bags that have been opened must be carefully resealed and kept upright to prevent leakage. Do not store in unlabeled bags. Use appropriate containment to avoid environmental contamination. Store in original bags, protected from direct sunlight.

Personal Protection

Put on appropriate personal protective equipment . Eating, drinking and smoking should be prohibited in areas where this material is handled, stored and processed. Workers should wash hands and face before eating, drinking and smoking. Remove contaminated clothing and protective equipment before entering eating areas. Persons with a history of skin sensitization problems should not be employed in any process in which this product is used. Do not get in eyes or on skin or clothing. Do not ingest. Avoid breathing vapour or mist. Keep in the original bag or an approved alternative made from a compatible material, kept tightly closed when not in use. Empty bags retain product residue and can be hazardous. Do not reuse bag.

Note: Always refer to the Safety Data Sheet (SDS) for complete safety information before handling this material.

Applications & Industries Sector of OAPSA

• Dyestuffs
• Pharma
• Synthetic organic intermediates

Industry Sectors

Frequently Asked Questions – OAPSA

What is the CAS number of OAPSA?

The CAS number of Ortho Amino Para Sulphonic Acid (OAPSA) is 98-37-3

Do you supply OAPSA ?

Yes, we supply OAPSA for domestic and international customers too.

Is OAPSA available for export?

Yes, we export OAPSA with complete documentation including COA and MSDS.