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L-Proline Structure

L-Proline

Chemical Properties

Melting point 228 °C (dec.) (lit.)
Boiling point 215.41°C (rough estimate)
alpha  -85.5 º (c=4, H2O)
Density  1.35
vapor pressure  0Pa at 25℃
FEMA  3319 | L-PROLINE
refractive index  -85 ° (C=4, H2O)
storage temp.  2-8°C
solubility  H2O: 50 mg/mL
form  powder
pka 1.95, 10.64(at 25℃)
color  White
Odor at 100.00 %. odorless
PH 6.0-7.0 (25℃, 1M in H2O)
optical activity [α]20/D 85.0±1.0°, c = 5% in H2O
Odor Type odorless
Water Solubility  soluble
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05
JECFA Number 1425
Merck  14,7780
BRN  80810
Stability Stable. Incompatible with strong oxidizing agents.
InChIKey ONIBWKKTOPOVIA-UHFFFAOYSA-N
LogP -2.54 at 20℃
Substances Added to Food (formerly EAFUS) L-PROLINE
FDA 21 CFR 172.320
CAS DataBase Reference 147-85-3(CAS DataBase Reference)
FDA UNII 9DLQ4CIU6V
NIST Chemistry Reference Proline(147-85-3)
EPA Substance Registry System L-Proline (147-85-3)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H315-H319-H335
Precautionary statements P261-P271-P280
Hazard Codes  Xi,Xn
Risk Statements  36/37/38-22
Safety Statements  24/25-36/37/39-26
WGK Germany  3
RTECS  TW3584000
3-10
TSCA  Yes
HS Code  29339990
Hazardous Substances Data 147-85-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: > 5110 mg/kg
NFPA 704:
1
1 0

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