are these GBL ingredients safe?

[DragonShroom]

i searched google for a type of alloy cleaner, and this particular one said it contained 99.9% GBL and has these specifications:

Product Specifications STD EL Method
Assay % minimum 99.8 99.9 STI8460
Water % maximum 0.02 0.02 STI8432
Acetal area ppm max. - 50 STI8460
Color APHA maximum 20 20 STI8415
1,4 Butanediol ppm max. 2.0 2.0 STI8415
THF, area % max. - 0.05 -
Acid, wt, % max 0.03 0.03 STI8461
Foreign matter none none STI8412
Physical Properties _
Boiling range, ºC 201 - 206
CAS Registry Number 96-48-0
Density @ 20 ºC , g/cm3 1.13
Flash point, ºC 104
Formula C4H6O2
Melting point, ºC ca. -43
Molecular Weight: 86.1
Impurities _
Nitrate, wt. ppm max 1.00
Sulfate, wt. ppm max 1.00
Potassium, wt. ppm max 0.50
Sodium, wt. ppm max 0.50
Chloride, wt. ppm max 0.30
Copper, wt. ppm max 0.05
Iron, wt. ppm max 0.05
Lead, wt. ppm max 0.05
Zinc, wt. ppm max 0.05



out of curiousity would this be safe for human consumption?

and also just out of curiousity would it be ok to use in ghb synthesis?