Ok, I managed to order and get new SN successfully. The package arrived today and by the blessing of stars and Universe, I was the one who accepted the package before anybody else. What a relief.
My old SN was "technical grade", according to the website. The purity was questionable so I ordered a new SN, which is "pro analysis" grade (whatever that means). It came in a sealed bottle and written as 99% purity on the cover.
I did some physical evaluations on it. Maybe it can serve as helpful frame of reference for others. Keep in mind, I myself have no way to confirm whether my SN is genuine or not. I'll just report every details that I encountered.
1. The texture is white-yellowish crystals. It's very similar to salt, except SN seems to be "smoother" and less "rough" compared to my table salt.
2. It's odorless. I tried to inhale inside the bottle. I didn't feel any nausea, headache, or anything dramatic. I felt nothing.
3. The taste is salty, but less salty than table salt. Table salt seems to be "strong and sharp" saltiness. SN is "dull" saltiness, it's kinda remind me of something like "rotten egg" taste a little bit. Difficult to explain.
4. I consumed small amount in order to taste it. Definitely less than 1g. There was no immediate reaction. Nothing dramatic like headache or nausea. But, after 25 minutes, I had to do an errand and walked somewhere. I felt slight "lightheaded", not really dramatic change. But, I found myself 20% more difficult to keep my center of gravity (balance) during the walk. This was noticable change.
5. Skin contact does not cause any irritation or burn. I put small amount on my right index finger for 5 minutes. Nothing happened, so I washed my hand. After that, I compared it to my left finger, my right one had different texture. It was like more "shriveled", "aging", "scrawny". Difficult to explain, but definitely my right finger looked "worse" and "uglier". This change disappeared after 1 hour.
6. Blood test. It quickly turned the red color into brown color. Very fast change and very noticeable.
I hope everyone who already got their SN to evaluate and report their findings as well. I am interested to know if your SN cause skin irritation/burn or not. This part really made me worry.