Per 
Item#: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: SCP-XXXX is to be contained inside of a 5 x 5 x 5 ft. containment chamber which will be monitored with four (4) cameras to monitor SCP-XXXX if it comes out of hibernation. The temperature of the containment chamber is also to be monitored so as to make sure the containment chamber stays at a strict 11° Celsius at all times until changes in SCP-XXXX require a change in chamber temperature.
In the case of SCP-XXXX coming out of hibernation, the chamber temperature is to increase by 10° Celsius. If SCP-XXXX still does not go back into hibernation the chamber temperature is to increase 10° Celsius every minute until SCP-XXXX goes back into hibernation. Requests for changes in temperature apart from a case of SCP-XXXX coming out of hibernation must receive no less than two-thirds of permission from the 05 Council, including for tests, and end-of-the-month Class-D termination.
Description: SCP-XXXX seems to be an opaque, amorphous, viscous, and black liquid which varies in mass depending on how many organisms, and the size of the organisms it has decomposed and melted away. SCP-XXXX has an average temperature of around -102° Celsius, the average temperature has fluctuated due to its abilities to adapt to warm and cold temperatures. Testing has shown that SCP-XXXX goes into a hibernation-like state if a large amount of the temperature around SCP-XXXX is 10° Celsius or higher.
SCP-XXXX has shown signs of sentience as when it is hot it goes into a cold corner and seemingly rests there until it adapts to the warmness and feels comfortable enough to resume the actions it was performing prior to the warmness. SCP-XXXX has also been seen doing something that looks as if it is playing with other instances of SCP-XXXX.
When an organism comes into contact with SCP-XXXX, (the organism can be referred to as SCP-XXXX-1) SCP-XXXX rises in mass so that it can spread throughout whatever organism it is touching. SCP-XXXX decomposes most of the organism and, when tested on Class-D, commonly fails to decompose small parts of the body such as fingers, toes, and the head. When a sentient organism begins the decomposition and melting process the subjects go through extreme pain before going into shock. After the decomposition process SCP-XXXX seems to relax in a puddle like state on the ground before moving in a snaky fashion to seek out other organisms.
Any remains that exist of the decomposed organism, which can be referred to as SCP-XXXX-2, seems to blacken as if it is going through the frostbite process. After blackening the remains slowly liquefy into another instance of SCP-XXXX.
Addendum 1 SCP-XXXX
Test Log I
D-2783 was told to submerge a hand of his choice into SCP-XXXX. D-2783 failed to comply and was forcibly made to submerge his right hand. D-2783 showed signs of immense pain which included cussing and screaming at foundation personal. SCP-XXXX finished the decomposition process approximately sixty (60) seconds into the test. Chamber temperature after the test was set to 11° Celsius and SCP-XXXX shortly after entered its hibernation-like state. Remains of D-2783 blackened and liquefied into another instance of SCP-XXXX, which also went into its hibernation-like state.