diff --git a/src/acom_music_box/music_box.py b/src/acom_music_box/music_box.py
index 01f29daf..1ea95711 100644
--- a/src/acom_music_box/music_box.py
+++ b/src/acom_music_box/music_box.py
@@ -365,6 +365,9 @@ def generateReactionConfig(self):
             if(reaction.name != None):
                 reac["MUSICA name"] = reaction.name
 
+            if(reaction.scaling_factor != None):
+                reac["scaling factor"] = reaction.scaling_factor
+
             reactionsArray.append(reac)
 
         reacList["reactions"] = reactionsArray
diff --git a/src/acom_music_box/music_box_reaction.py b/src/acom_music_box/music_box_reaction.py
index 7aa02cb6..be260763 100644
--- a/src/acom_music_box/music_box_reaction.py
+++ b/src/acom_music_box/music_box_reaction.py
@@ -11,7 +11,7 @@ class Reaction:
         products (List[Product]): A list of Product instances representing the products. Default is an empty list.
     """
 
-    def __init__(self, name=None, reaction_type=None, reactants=None, products=None):
+    def __init__(self, name=None, reaction_type=None, reactants=None, products=None, scaling_factor=None):
         """
         Initializes a new instance of the Reaction class.
 
@@ -25,6 +25,7 @@ def __init__(self, name=None, reaction_type=None, reactants=None, products=None)
         self.reaction_type = reaction_type
         self.reactants = reactants if reactants is not None else []
         self.products = products if products is not None else []
+        self.scaling_factor = scaling_factor
 
     def add_reactant(self, reactant):
         """
diff --git a/src/acom_music_box/music_box_reaction_list.py b/src/acom_music_box/music_box_reaction_list.py
index bd2c31d7..414eb407 100644
--- a/src/acom_music_box/music_box_reaction_list.py
+++ b/src/acom_music_box/music_box_reaction_list.py
@@ -111,6 +111,7 @@ def get_products_from_JSON(self, reaction, species_list):
     def get_reactions_from_JSON(self, reaction, species_list):
 
         name = reaction['MUSICA name'] if 'MUSICA name' in reaction else None
+        scaling_factor = reaction['scaling factor'] if 'scaling factor' in reaction else None
         reaction_type = reaction['type']
     
         reactants = ReactionList.get_reactants_from_JSON(reaction, species_list)
@@ -163,4 +164,4 @@ def get_reactions_from_JSON(self, reaction, species_list):
             N = reaction.get('N')
             return Troe_Ternary(name, reaction_type, reactants, products, k0_A, k0_B, k0_C, kinf_A, kinf_B, kinf_C, Fc, N)
         else:
-            return Reaction(name, reaction_type, reactants, products)
+            return Reaction(name, reaction_type, reactants, products, scaling_factor)