【CAS】63-68-3 Molecular formula:C5H11NO2S Relative molecular mass: 149.21
الصيغة التركيبية:
一 一 خاصية المنتج :.
Melting point: 276 – 279℃ (deci)
Specific rotation: 23.25℃ (in 2.6N HCl solution)
Water solubility: Soluble
Solubility: Easily soluble in water. The solubility in water at 25℃ is 25g/100ml; at 50℃ it is 39.1g/100ml; at 75℃ it is 54.4g/100ml.
At 100℃, its concentration is 67.2g/100ml. It is insoluble in ethanol and can be dissolved approximately 0.06g in 100g of anhydrous ethanol. It is almost insoluble in acetone and ethanol.
二-مؤشر الجودة:
| المعلمة | الوحدة | المواصفات (درجة الغذاء) |
| المظهر | - | White or light yellow crystalline powder |
| Assay (C₅H₁₁NO₂S) | % (وزن/وزن) | ≥ 98.5 |
| الخسارة عند التجفيف | % (وزن/وزن) | ≤ 0.5 |
| البقايا عند الاشتعال | % (وزن/وزن) | ≤ 0.1 |
| المعادن الثقيلة (مثل الروبيان) | ملغم/كغم | ≤ 10 |
| الزرنيخ (As) | ملغم/كغم | ≤ 2 |
| الحديد (Fe) | ملغم/كغم | ≤ 30 |
| كلوريد (Cl-) | % (وزن/وزن) | ≤ 0.2 |
| الكبريتات (SO₄²-) | % (وزن/وزن) | ≤ 0.3 |
| Ammonium Salt (NH₄⁺) | % (وزن/وزن) | ≤ 0.05 |
| الأس الهيدروجيني (محلول 1%) | - | 5.0-7.0 |
| الحدود الميكروبيولوجية | - | إجمالي عدد الصفائح الدموية ≤ 1000 وحدة حرارية مجمدة/غرام؛ لا توجد مسببات أمراض |
:نطاق التطبيق والاستخدام : ثلاثة.
DL-Methionine (Food-Grade) is a vital sulfur-containing amino acid primarily used as a nutritional supplement in food and animal feed to improve protein balance. In the food industry, it is added to cereals, dairy products, and health foods to enhance nutritional value, especially in vegetarian or low-protein diets. It also serves as a flavor enhancer in processed foods and seasonings due to its umami properties.
:الحزمة والتخزين :العبوة والتخزين :
The packaging of this product is 25 kilograms per bucket.
For storage, keep methionine in a cool, dry, well-ventilated warehouse away from direct sunlight, high humidity, and strong oxidizers.






