Adding Easy Sand Joint Compound to Soil

Hey folks, I've been doing a lot of drywall repair lately and have been using Easy Sand Joint Compound. If you're not familiar with it, it comes in a powder form and you take a bit as needed, add water, and mix it up into a paste to patch drywall. Inevitably, I mix up a bit too much for the section I'm working on and end up with maybe half a cup of waste that I toss into the trash to dispose.

I took a minute the other day to read the ingredients list and was surprised by the simplicity of it. Picture is below, but it looks like the ingredients are:
1. Plaster of Paris (this has been discussed here https://permies.com/t/93912/Plaster-Paris-gypsum-calcium-sulfate)
2. Limestone (may contain mica)
3. Perlite
4. Attapulgite (apparently this is a naturally occurring mineral in the clay soils of the southeast, which is where I am)

My uncultivated soil is heavy clay and runs a bit on the acidic side. Do y'all think I can add this to new beds I'm creating? Would it have any benefit or drawbacks that I should be concerned about? I feel bad wasting it even if it is only a little bit each time. It dissolves easily into water easily, so I'm thinking I'd just mix it into a five gallon bucket and pour it into the beds.

I saw a discussion about adding scrap drywall to soil here https://permies.com/t/99983/Composting-soil-amending-drywall-scraps, and agree that I'm not sure what is in drywall that makes it do what it does. The joint compound by itself though seem to be benign.

These compounds set up hard and fast, I use them directly or as an accelerant in premixed drywall mud.
I'm mean, it could work, but I've looked at it as an additive for cast earth or adobe.
At least if you mix it into too much water, it will be non reactive  with the soil.

If all I had was a 1/2 cup of the mix, I would water in down before pouring onto my soil.

My first thought was to pour this onto the compost pile.

Anne Miller wrote:If all I had was a 1/2 cup of the mix, I would water in down before pouring onto my soil.

My first thought was to pour this onto the compost pile.

Yeah just half a cup or so at a time. Mixed into a couple gallons of water and poured into the beds.