rlin0781

[rlin0781]

Is there anyone who has used CSS a lot who actively enjoys working with it? Every bit of CSS I've learned in recent memory I have actively learned against my will.

[rlin0781]

I love material safety data sheets for water.

MSDSs tend to have a fairly standardized language to describe safety considerations, which is really helpful in general because that succinctly communicates a lot of really important information, but when that language is applied to something like, well, water, some hilarious results occur.

Some examples under the cut.

ThermoFisher does not want you to drink its water. Honestly fair. Beyond the rabbit hole of chemical grades (some digging shows that this water is specifically LC-MS grade) drinking distilled water over a long period of time is not great for your health.

I feel like this mostly speaks for itself, honestly, and it is probably strictly better to have it there than not, but if a lab's first instinct is to let spilled water just sit there regardless of whether it was on the SDS or not there are probably a few more things worth worrying about.

Miscible with water? Big if true.

Good news everyone, water is not known to the State of California to cause cancer and birth defects or other reproductive harm.

Here's the Sigma-Aldrich water MSDS. In case you get their water into your eyes, on your skin, or into your stomach, they recommend dealing with it with more water.

Except for inhalation, which recommends fresh air. I think I heard somewhere that dealing with water inhalation with more water comes with some adverse health effects

I know I already showcased this with the ThermoFisher SDS, but this always gets me.

Well that ruins my weekend plans of mixing a kilogram of elemental sodium with water. Darn.

Big fan of comically high LD50s. For context sucrose's LD50 is less than a third of this.

Lastly I want to showcase this thing because a few things on there seem... off.

Well, at least it's not Danger.

When I first discovered this about one and a half years ago, I didn't really notice anything off (in fact most of the things on the page make sense) until I saw this. Maybe I'm missing out on some really exciting water chemistry but I don't think it should be extremely toxic, potentially explosive, and flammable under heating.

In fact other parts of the SDS seems to agree with me here.

I don't know why this is the case, but every time I have to deal with material safety stuff I always think about it and it's great every single time.