about an hour or two.
No, the hot milk should NOT spoiled if you keep in refrigerator.
http://parenting.ivillage.com/newborn/nbreastfeed/0,,484b,00.html
Keep it on the second shelf or freeze it.
It typically takes about 12-24 hours to defrost breast milk in the refrigerator.
Breast milk separates in the refrigerator due to the natural fat content in the milk. Factors that contribute to this process include the temperature of the refrigerator, the fat content of the milk, and how long the milk has been stored.
Thawed breast milk can be safely kept in the refrigerator for up to 24 hours before it needs to be discarded.
Thawed breast milk can be safely kept in the refrigerator for up to 24 hours before it needs to be used or discarded.
Defrosted breast milk can be safely kept in the refrigerator for up to 24 hours before it needs to be used or discarded.
Breast milk is good for 24 hours after defrosting in the refrigerator.
Breast milk is good for 24 hours after thawing in the refrigerator.
Breast milk can be safely stored in the refrigerator for up to 4-8 days before it expires.
Coconut milk typically lasts for about 7-10 days in the refrigerator before it goes bad.