×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Mono ammonium phosphate and calcium hydroxide

Mono ammonium phosphate and calcium hydroxide

Mono ammonium phosphate and calcium hydroxide

(OP)
Hi i wanted to ask
When dissolving mono ammonium phosphate in water is there a chance phosphoric acid may be produced? If yes will it be acidic enough to react with metals? . Also what will be the reaction between MAP and calcium hydroxide?
thank you

RE: Mono ammonium phosphate and calcium hydroxide

Phosphoric acid will not be formed.

Ammonium phosphate is the salt of ammonia and phosphoric acid. The equation showing the dissolving of solid ammonium phosphate in water is:

(NH4)3 PO4 (s) → 3NH4 +1 (aq) + PO4 -3 (aq).

When ammonium phosphate is added to water, the compound disassociates into three ammonium ions and one phosphate ion.

Ammonium phosphate is obtained as a crystalline powder upon mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH4)2(HPO4). It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate (NH4)(H2PO4) is formed.

Ammonium phosphate is slightly acidic and corrosive in nature.



RE: Mono ammonium phosphate and calcium hydroxide

(OP)
Thank you , i was gonna ask about the fumes generated from oven drying soil containing MAP and you have already replied it . I smelled a urine like odor which i thought was ammonia and was a bit scared about any potential explosion

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close