USD $100.00-150.00 / Kilogram
USD $0.40-1.00 / Metric Ton
USD $100.00-150.00 / Kilogram
USD $32.00-34.00 / Metric Ton
USD $1.00-10.00 / Kilogram
USD $90.00-100.00 / box
sichuan tongsheng is the most strongest manufacturer and exporter of amino acids and their derivatives in china, we guarantee high quality, competive price and reliable service.
we fully compliance with iso9001:2008, production and quality management following gmp standards, production plant constructed in accordance with gmp standards. quality control conforms to the standards of pharmaceutical-food cp grade and japan ajinomoto aji, american usp and reagent grade br.
we have kosher and hala certificate.
product name: ac-met-oh
cas#: 65-82-7
synonyms: n-acetyl-l-methionine
molecular formula: c7h13no3s
molecular weight: 191.25
specifications: (reference standard aji92)
item |
standard |
analysis data |
appearance |
white crystals or crystalline powder |
conforms |
specific rotation[α]20/d (c=2,h2o) |
-18.0°to -22.0° |
-20.15° |
transmittance |
not less than 95.0% |
99% |
heavy metal(pb) |
not more than 20ppm |
<20ppm |
arsenic(as2o3) |
not more than 2ppm |
<2ppm |
other amino acids |
chromatographically not detectable |
conforms |
loss on drying |
not more than 0.50% |
0.4% |
residue on ignition (sulfated) |
not more than 0.10% |
0.08% |
assay |
99.0 to100.5% |
99.1% |
ph |
1.7 to 3.0 |
2.4 |
laboratory picture: