P-Hydroxybenzoic Acid Methyl Ester Methylparaben CAS No 99-76-3 - Methylparaben lan 99-76-3
:
SAMREAL-0315
:
99-76-3
:
c8h8o3
:
202-785-7
:
Dhukungan angkutan laut
:
Cina
:
L/C, D/A, D/P, T/T, Western Union, MoneyGram, OA
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USP
Asam Organik
Putih
Cina
samreal
25 kg/drum
Drum
wêdakakêna
Kelas Kedokteran
Deskripsi Produk
Methylparaben cas no 99-76-3
| Item | Spesifikasi | Asil Tes |
| Penampilan | Wêdakakêna putih | lulus |
| Kemurnian (ing basa garing)% | 98.0-102.0 | 99.2 |
| Titik Lebur ºC | 125-128 | 127.3 |
| Asam |
Ora luwih saka 0,1 ml natrium hidroksida 0,1 N
dibutuhake kanggo ngasilake warna biru | lulus |
| Identifikasi |
A. Penyerapan infra merah
Spektrofotometri B. Kromatografi Lapisan Tipis | lulus |
| Sisa% | ≤0.1 | 0.05 |
| Kerugian ing pangatusan% | ≤0.5 | 0.3 |
| Logam Berat (Pb) | ≤10ppm | lulus |
|
Sisa pelarut
(Methanol) | <3000PPM | lulus |
| Zat sing gegandhengan |
Asam P-Hydroxybenzoic: ≤0,5%
Kotoran sing ora ditemtokake: ≤0,5% Total impurities: ≤1,0% | lulus |
| Werna solusi | 100mg / ml ing alkohol, Solusi kasebut cetha. | lulus |
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