Ascorbic acid Cas: 50-81-7
Nọmba katalọgụ | XD92025 |
Aha ngwaahịa | Ascorbic acid |
CAS | 50-81-7 |
Ụdị molekụlala | C6H8O6 |
Ibu molekụla | 176.12 |
Nkọwa nchekwa | 5-30 Celsius C |
Koodu tarifu akwadoro | 29362700 |
Nkọwapụta ngwaahịa
Ọdịdị | Ọcha ntụ ntụ |
Asay | 99% nkeji |
Ebe mgbaze | 190-194 Celsius C (dec.) |
alfa | 20.5º (c=10,H2O) |
Ebe esi nri | 227.71C (atụmatụ siri ike) |
njupụta | 1,65 g/cm3 |
index refractive | 21 Celsius (C=10, H2O) |
solubility | H2O: 50 mg/mL na 20 Celsius C, doro anya, ọ fọrọ nke nta ka ọ bụrụ enweghị agba |
pka | 4.04, 11.7 (na 25 ℃) |
PH | 1.0 - 2.5 (25 ℃, 176g/L n'ime mmiri) |
Ọnụ ego PH | 1-2.5 |
Isi | Enweghị isi |
ngwa anya ọrụ | [α]25/D 19.0 ruo 23.0°, c = 10% na H2O |
Mmiri Solubility | 333 g/L (20ºC) |
Sodium, potassium, na calcium salts nke ascorbic acid ka a na-akpọ ascorbates ma na-eji dị ka ihe nchekwa nri.Iji mee ka ascorbic acid abụba soluble, ọ nwere ike esterified.Esters nke ascorbic acid na acids, dị ka palmitic acid na-etolite ascorbyl palmitate na stearic acid na-etolite ascorbic stearate, na-eji dị ka antioxidants na nri, ọgwụ, na ịchọ mma.Ascorbic acid dịkwa mkpa na metabolism nke ụfọdụ amino asịd.Ọ na-enyere aka ichebe mkpụrụ ndụ pụọ na mmebi nke radical free, na-enyere aka absorption ígwè, ma dị mkpa maka ọtụtụ usoro metabolic.
Mechie