AMMONIUM HYDROXIDE- ▸ pH adjustment: Alkalizer/neutralizer in process streams.
- ▸ Cleaning & detergents: Active in industrial and household cleaners.
- ▸ Water treatment: Purification and chloramine pH control.
- ▸ Textiles & paper: Rayon, textile, and pulp/paper processing.
- ▸ Metal extraction: Ammoniacal leaching and refining.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Ammonium hydroxide (CAS 1336-21-6) is aqueous ammonia, supplied here at approximately 28% (Type B). It is used in the manufacture of rayon and textiles, pulp and paper, rubber, detergents and cleaners, and inks; in water purification and pH adjustment; in photographic development; and in metal extraction and refining.
Frequently Asked Questions
What is ammonium hydroxide Type B 27.9% used for?
Ammonium hydroxide (aqueous ammonia) at roughly 28% is used as an alkalizer/neutralizer for pH adjustment in process streams, as an active in industrial and household cleaners and detergents, in water purification and chloramine pH control, in rayon/textile and pulp/paper processing, and in ammoniacal metal leaching and refining. Type B denotes the approximately 27.9% concentration grade.
What is the highest concentration of ammonium hydroxide?
Aqueous ammonia is limited by ammonia solubility in water; concentrated commercial grades typically run up to about 28-30% NH3 by weight, beyond which ammonia readily off-gasses. This Type B product is supplied at approximately 27.9% maximum. Confirm the exact assay on the product Certificate of Analysis.
Is ammonium hydroxide a strong acid or a base?
Ammonium hydroxide is a weak base, not an acid; it is aqueous ammonia (NH3 in water) and raises pH, which is why it is used as an alkalizer and neutralizer. It is only partially ionized in solution, distinguishing it from strong bases like sodium hydroxide. See the SDS for handling and GHS classification.
What is the chemical identity and CAS number of ammonium hydroxide?
Ammonium hydroxide has CAS 1336-21-6 and is the aqueous solution of ammonia, classified under HS code 2814.20. This grade is supplied at approximately 27.9% NH3 (Type B). Concentration and identity are documented on the CoA.
How is bulk ammonium hydroxide shipped and packaged?
Aqueous ammonia is supplied in drums, totes, and bulk to manufacturers and ships under UN 2672 (ammonia solution). Transport requires the corresponding DOT/IMDG documentation and packaging, which we provide with the SDS and CoA. Request a bulk quote for your volume and packaging.