Ammonium Hydroxide 20% ACS Grade

Name: Quick Facts: Ammonium Hydroxide 20% ACS Grade
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Product quick facts

CAS 1336-21-6NH4OHUN2672

Ammonium Hydroxide 20% ACS Grade (CAS 1336-21-6) is a 20% ACS reagent-grade liquid with molecular formula NH4OH and a molecular weight of 35.046 g/mol, meeting American Chemical Society specifications for analytical use. It ships as DOT Hazard Class 8. Alliance Chemical supplies this product in 7 container sizes from 1 Quart to 330 Gallon (16 pack options) with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 container sizes (1 Quart to 330 Gallon) · 16 pack options
Purity / spec 20% ACS Reagent Grade
Lead time In-stock orders placed by Mon-Thu 2 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Quick Answer

What is Ammonium Hydroxide 20% ACS Grade used for, and what should buyers verify before ordering?

Ammonium Hydroxide 20% ACS Grade is supplied at 20% in ACS Reagent Grade with UN2672, DOT Class 8 . Buyers should confirm pack size, grade, SDS, COA needs, and freight requirements before purchase.

Assay: 20%
Grade: ACS Reagent Grade
UN number: UN2672
DOT class: 8

Technical Documents

Live, always-current documents. Need the Certificate of Analysis for your lot? Just ask, no charge.

Who Buys This

Analytical testing laboratories
Quality control teams
Research and development labs
Educational science departments

Purity / Grade Guide

ACS Grade for lab use
Suitable for analytical procedures
COA on request, no charge
SDS included with every order

Pack Sizes

1 Quart: lab & small jobs
1 Gallon: shop & maintenance
5 Gallon: production & regular use
15 Gallon: mid-volume operations
55 Gallon: bulk drum
275 Gallon: high-volume tote
330 Gallon: max-volume tote

Small Packs: UPS Ground nationwide for pints, quarts, and gallons.

LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.

Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.

Description
Product Documents
Chemical Profile

Product Overview

Ammonium Hydroxide 20% ACS Grade is a pre-diluted aqueous solution of ammonium hydroxide (NH4OH) prepared with high-purity deionized water. This 20% concentration provides a convenient, ready-to-use form that eliminates the need for on-site dilution of concentrated stock. Appearance: Clear, colorless liquid with strong ammonia odor. Meeting ACS Reagent Grade specifications, this product is suitable for analytical and laboratory applications requiring controlled purity and documented impurity limits.

Supplied by Alliance Chemical in sizes ranging from 1 quart to 330-gallon IBC totes, this solution is ideal for operations requiring consistent 20% strength with minimal handling risk compared to higher concentrations.

Key Properties

Chemical Name: Ammonium Hydroxide
Synonyms: Ammonia Solution, Aqueous Ammonia, NH4OH
Chemical Formula: NH4OH
CAS Number: 1336-21-6
Molecular Weight: 35.05 g/mol
Concentration: 20% (w/w)
Grade: ACS
Specific Gravity (20°C): 0.920
Boiling Point: 38°C
Flash Point: N/A
Appearance: Clear, colorless liquid with strong ammonia odor
Solubility: Fully soluble in water

Common Applications

Cleaning & Degreasing: Effective alkaline cleaner for removing grease, oils, and organic residues from surfaces and equipment.
Water & Wastewater Treatment: Used for pH adjustment and as a chloramine disinfection agent in municipal water treatment.
Metal Surface Treatment: Serves as an etchant and patina agent for copper, brass, and aluminum surface finishing.
Laboratory Reagent: Standard reagent for qualitative analysis, buffer preparation, and complexometric titrations.
Agricultural Applications: Nitrogen source for fertilizer formulations and soil pH adjustment.

Safety Precautions

Ammonium Hydroxide releases ammonia vapor which is irritating to eyes, skin, and respiratory tract. Handle in well-ventilated areas or under a fume hood. Store in tightly sealed HDPE containers in a cool, dry location away from acids.

PPE Requirements: Wear chemical-resistant gloves, splash goggles, and a face shield. Use respiratory protection if ventilation is inadequate. In case of inhalation, move to fresh air immediately. In case of eye or skin contact, rinse with water for at least 15 minutes. Refer to the SDS for detailed handling and emergency procedures.

Shipping: UN 2672, Ammonia solution, Class 8, PG III.

Benefits

Ready-to-Use Solution: Pre-diluted concentration reduces vapor exposure and simplifies safe handling.
Consistent Ammonia Content: Manufactured with high-purity materials for reliable concentration control.
Flexible Packaging: Available from quart bottles to bulk totes for any application scale.

Frequently Asked Questions About Ammonium Hydroxide 20% ACS Grade

What is Ammonium Hydroxide 20% ACS Grade and what is its chemical formula?

Ammonium Hydroxide 20% ACS Grade is listed under CAS 1336-21-6 (PubChem reference search). The catalog formula is NH4OH. The listed molecular weight is 35.046 g/mol. For solutions and blends, identity values may describe a constituent; consult the product SDS for composition.

What are the physical properties of Ammonium Hydroxide 20% ACS Grade?

Catalog reference information for Ammonium Hydroxide 20% ACS Grade: form: Liquid; appearance: Clear, colorless liquid with strong ammonia odor; melting point: -57.5°C; boiling point: 38°C; specific gravity: 0.92; solubility: Fully soluble in water; reference values may describe a pure substance rather than the supplied concentration or blend. Confirm applicable conditions and specifications in the product documents; these values are not batch test results.

What grade and purity of Ammonium Hydroxide 20% ACS Grade does Alliance Chemical offer?

Alliance Chemical lists Ammonium Hydroxide 20% ACS Grade in ACS reagent grade with a concentration or assay of 20%. Check the product specification for the measurement basis and acceptance limits. A grade label alone does not establish certification or suitability for a regulated application. For batch results, request a COA using the product name and lot number.

What are common industrial applications of Ammonium Hydroxide 20% ACS Grade?

Catalog industry categories for Ammonium Hydroxide 20% ACS Grade include Chemical Processing, Lab & Research. To evaluate it for your process, compare the listed grade, concentration and product specifications with your requirements. Contact Alliance Chemical to confirm any application-specific documentation or certification before ordering.

What are the hazards of Ammonium Hydroxide 20% ACS Grade and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Ammonium Hydroxide 20% ACS Grade carries the signal word Danger and the following hazard statements: H314 CAUSES SEVERE SKIN BURNS AND EYE DAMAGE; H335 MAY CAUSE RESPIRATORY IRRITATION; H400 VERY TOXIC TO AQUATIC LIFE. Product-specific first aid, fire-fighting, spill response, handling, storage, exposure controls/PPE, and disposal guidance are in SDS Sections 4-8 and 13 — always consult the SDS before use. Download the SDS.

What is the DOT shipping classification for Ammonium Hydroxide 20% ACS Grade?

The catalog transport entry lists UN2672, hazard class 8, packing group III. Consult SDS Section 14 and confirm the requirements for your selected pack size and shipping destination with Alliance Chemical.

How must Ammonium Hydroxide 20% ACS Grade waste be disposed?

Consult SDS Section 13 for disposal information for Ammonium Hydroxide 20% ACS Grade. Disposal requirements depend on the resulting waste, contamination and location. Have your site's responsible waste professional determine the appropriate waste classification and disposal method. View the SDS.

Does Alliance Chemical provide an SDS and COA for Ammonium Hydroxide 20% ACS Grade?

Search the document library for Ammonium Hydroxide 20% ACS Grade. The SDS is also available here. A sample COA describes specifications and does not establish the results for your shipment. To request a lot-specific COA or confirm document availability, contact Alliance Chemical with the product name and lot number.