فى الصيدلية

رقم تسجيل المواد الكيميائية (CAS Number)

Mohamed Elshennawy

اخر تحديث :

ماهو رقم CAS Number؟

- هو رقم تسجيل المركبات الكيميائية .. اختصار لكلمة "Chemical Abstract Service" .. وهو نظام عالمي لترقيم هذه المركبات، وهو صفة مميزة لكل مادة. حيث لا تجد رقم يعبر عن مادتين كيميائيتين.

فائدة هذا الرقم:

يسهل من البحث والتعامل مع المواد الكيميائية لغير الكيميائين بدلاً من التعامل مع الصيغ والرموز الكيميائية المعقدة.

الصيغة:

يقسم الـ CAS Number عن طريق علامة الواصلة "الشرطة" (-) الى 3 أقسام:

القسم الأول يتكون من رقمين الى 7 أرقام

القسم الثاني يتكون من رقمين فقط

القسم الثالث يتكون من رقم واحد فقط ويسمى برقم الاختبار "Check Digit".

لإيجاد رقم التسجيل CAS لأي مركب قم بكتابة اسمه، صيغته، أو بنيته، في أي من المواقع التالية:

Nist

Common Chemistry

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