Is this one a bright white light or does it have some yellow in it?

These bulbs are very bright white-almost blue. I personally hate them, they aren't very nice to look at and I would never put them inside my home. They are currently in my garage, and I don't even like that type of light in there. Too commercial/industrial. Also, they take some time to warm up to full brightness. Not exactly the best for my Central New York climate.

Will these bulbs fit in a ceiling fan 3 light fixture?

If you had to choose between these and LED's in your ceiling fan, I would highly recommend these over LED any day. Reason: my sweetheart and I were recently out shopping for bulbs (ironically for the ceiling fan) and saw this "great" deal on LED's. "Oh yes, the wattage is low and they're such a bright light. We can save on electricity AND have a good light".... or so we thought. The first part is true, but as far as a "bright light", nothing could be further from the truth! The bulb itself was extremely bright and "white", but the light it emitted was a weird "dull". Every time I went in the upstairs hallway (which is another place we put them) I felt like I was entering some space ship, or operating room. The fluorescent lights are different. They are bright and "white" and the light it emits is also BRIGHT. They actually look as though you have a huge window lighting up the entire room. There is ONE downfall to this though. The bulbs are not exactly the prettiest. They do look very odd in open light fixtures; without a globe or some other sort of covering. I don't know if ALL LED bulbs do this, but I do know the ones we used DID and that was enough to deter me away from LED's.

will this bulb fits a nornal bulb socket?

Yes this bulb fits any normal lamp bulb socket.

What is the CRI (color rendering index)?

The package does not give a CRI. It claims to be "daylight deluxe" with a brightness of 1600 lumens at 6500K. For more information, you might ask at Philips web site.

Brand	Philips
Light Type	CFL
Special Feature	Compact, Needs recycling, Not Dimmable
Wattage	9 watts
Bulb Shape Size	A19
Bulb Base	E26
Incandescent Equivalent Wattage	40 Watts
Specific Uses For Product	Indoor/Outdoor use
Light Color	Soft White
Voltage	120 Volts
Unit Count	4.0 Count
Color Temperature	2700 Kelvin
Number of Items	1
Brightness	500 Lumen
Shape	Bulb
Material	Acrylonitrile Butadiene Styrene (ABS)
Model Name	9 Watt
Indoor/Outdoor Usage	Indoor, Outdoor
Power Source	Corded Electric
Color Rendering Index	80
Power Consumption	40 Watts
Item Package Quantity	1
Light Source Type	Compact Fluorescent Light (CFL)
Specification Met	Energy Star Qualified, UL Listed
Item Weight	0.15 Pounds
Light Source Wattage	9 Watts
Product Dimensions	2.6"W x 4.92"H
Accepted voltage frequency	100 to 120 Volts and 60 Hertz
Control Method	App
Average Life	13000 Hours
White Brightness	450 Lumens
Efficiency	Energy-saving
Style	9W (40-Watt Equivalent)
Global Trade Identification Number	00046677417062
Manufacturer	Philips
Color	Soft White
UPC	046677417062
Light Output Maximum	500 Lumens
Part Number	417063
Item Weight	2.4 ounces
Item model number	417063
Is Discontinued By Manufacturer	No
Size	4 Count (Pack of 1)
Finish	Soft White
Special Features	Compact, Needs recycling, Not Dimmable
Included Components	Compact Fluorescent Mini-Twister Light Bulb (4)
Batteries Included?	No
Batteries Required?	No
Warranty Description	11 year limited warranty.

LED 417063 Energy Saver Compact Fluorescent T2 Mini-Twister (A19 Replacement) Household Light Bulb: 2700-Kelvin, 9-Watt (40-Watt Equivalent), E26 Medium Screw Base, Soft White, 4-Pack

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