Would a bottle of this paint additive (active constituent Octhilonone 175g/L) which is more than 10 years old still work well?

Perhaps you mean “work as intended” :p

The MSDS is particularly unhelpful but as it is an organic compound I suspect that it would have a shelf life well under 10 years.

Speedy said:

Would a bottle of this paint additive (active constituent Octhilonone 175g/L) which is more than 10 years old still work well?

May be, it takes 120 days in soil for microbes to munch it, and has a half life in water of 40 days.

poikilotherm said:

Speedy said:

Would a bottle of this paint additive (active constituent Octhilonone 175g/L) which is more than 10 years old still work well?

May be, it takes 120 days in soil for microbes to munch it, and has a half life in water of 40 days.

So that’s a no?

Tamb said:

The MSDS is particularly unhelpful but as it is an organic compound I suspect that it would have a shelf life well under 10 years.

It does sound like it.

Damn! That stuff was expensive at the time.

Speedy said:

poikilotherm said:

Speedy said:

Would a bottle of this paint additive (active constituent Octhilonone 175g/L) which is more than 10 years old still work well?

May be, it takes 120 days in soil for microbes to munch it, and has a half life in water of 40 days.

So that’s a no?

Work well, no, work, maybe.

Speedy said:

Tamb said:

The MSDS is particularly unhelpful but as it is an organic compound I suspect that it would have a shelf life well under 10 years.

It does sound like it.

Damn! That stuff was expensive at the time.

But you’ve got 10 years out of it.

Tamb said:

Speedy said:

Tamb said:

The MSDS is particularly unhelpful but as it is an organic compound I suspect that it would have a shelf life well under 10 years.

It does sound like it.

Damn! That stuff was expensive at the time.

But you’ve got 10 years out of it.

Exactly.

What mould are you trying to kill?

Michael V said:

What mould are you trying to kill?

Yucky mould. Mould that causes allergies.

We are repainting a built-in wardrobe. This mould killer worked quite well in this wardrobe for all that time.

Just deciding whether to buy the pre-mixed Dulux Plus paint, or use up this bottle and buy the less-expensive paint. Looks like it’s the Plus.

Speedy said:

Michael V said:

What mould are you trying to kill?

Yucky mould. Mould that causes allergies.

We are repainting a built-in wardrobe. This mould killer worked quite well in this wardrobe for all that time.

Just deciding whether to buy the pre-mixed Dulux Plus paint, or use up this bottle and buy the less-expensive paint. Looks like it’s the Plus.

+

Speedy, there are dedicated anti mould primers you can use for this purpose. Then on the top coat I would also ask the paint shop to add a mould inhibitor in for you. If you have the paint shop add the inhibitor for you, you don’t need to buy a big container of the anti mould treatment and have it go to waste.

I have used this primer to good effect in the past. https://www.dulux.com.au/specifier/products/50SX390A.html

In the Far north of Australia paint shops are familiar with these things. I’m not sure of other parts of the country. I would go to a specialist paint shop rather than a big green box to buy your top coat paint.

stan101 said:

Speedy, there are dedicated anti mould primers you can use for this purpose. Then on the top coat I would also ask the paint shop to add a mould inhibitor in for you. If you have the paint shop add the inhibitor for you, you don’t need to buy a big container of the anti mould treatment and have it go to waste.

I have used this primer to good effect in the past. https://www.dulux.com.au/specifier/products/50SX390A.html

In the Far north of Australia paint shops are familiar with these things. I’m not sure of other parts of the country. I would go to a specialist paint shop rather than a big green box to buy your top coat paint.

I concur with this. Our local paint shop does these things for you. We are not in the North, but they know about such things.

I see Haymes claim mould resistant properties in their normal paint now:

http://www.haymespaint.com.au/products/product-information/view/haymes-interior-expressions#msds-data-sheet

I am a fan of Haymes paints.

stan101 said:

Speedy, there are dedicated anti mould primers you can use for this purpose. Then on the top coat I would also ask the paint shop to add a mould inhibitor in for you. If you have the paint shop add the inhibitor for you, you don’t need to buy a big container of the anti mould treatment and have it go to waste.

I have used this primer to good effect in the past. https://www.dulux.com.au/specifier/products/50SX390A.html

In the Far north of Australia paint shops are familiar with these things. I’m not sure of other parts of the country. I would go to a specialist paint shop rather than a big green box to buy your top coat paint.

Thanks stan. I hadn’t realised that paint shops could put the additive in for us. We bought the Dulux Plus paint from the big green box a while ago. I was just wondering whether we could have an option to return the un-opened tin, buy the normal paint and use up the mould killer we already had. I’ve since thrown out the mould killer and we’ve started using the Plus paint already.

I’m also out with the big guns and had one of these dehumidifiers delivered today

https://www.andatech.com.au/ionmax-ion632

Repainting the wardrobe, fixing the disaster we uncovered in the ensuite (hole in the slab) and using this new beastie will surely prevent any surface mould from forming in the first place.

Speedy said:

stan101 said:

Speedy, there are dedicated anti mould primers you can use for this purpose. Then on the top coat I would also ask the paint shop to add a mould inhibitor in for you. If you have the paint shop add the inhibitor for you, you don’t need to buy a big container of the anti mould treatment and have it go to waste.

I have used this primer to good effect in the past. https://www.dulux.com.au/specifier/products/50SX390A.html

In the Far north of Australia paint shops are familiar with these things. I’m not sure of other parts of the country. I would go to a specialist paint shop rather than a big green box to buy your top coat paint.

Thanks stan. I hadn’t realised that paint shops could put the additive in for us. We bought the Dulux Plus paint from the big green box a while ago. I was just wondering whether we could have an option to return the un-opened tin, buy the normal paint and use up the mould killer we already had. I’ve since thrown out the mould killer and we’ve started using the Plus paint already.

I’m also out with the big guns and had one of these dehumidifiers delivered today

https://www.andatech.com.au/ionmax-ion632

Repainting the wardrobe, fixing the disaster we uncovered in the ensuite (hole in the slab) and using this new beastie will surely prevent any surface mould from forming in the first place.

Mrs SS was on some whiz bang mould killer stuff when she was having chemo.. a grand for a 300ml bottle!

She took the leftovers when she had finished treatment and added it to the paint when she painted my bathroom. apparently it would do the job