B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 56; Flight Crew Total 12848; Flight Crew Type 10140
Communication Breakdown
Deviation / Discrepancy - Procedural Hazardous Material Violation
General Maintenance Action; General Work Refused
Human Factors
On walk around; First Officer noticed six 5-gallon metal drums being loaded in the fwd cargo pit with the words 'PERFLUORO ALCOHOL Made in China'; painted on the drums in white letters.  The ramp personnel; when asked if we would receive DG (dangerous goods) paperwork for this shipment of alcohol; answered yes.  I called Dispatch (who immediately reached out to cargo and DG safety); and explained that we weren't being given any DG paperwork for the alcohol; only paperwork for some dry ice that we had already been notified about.  I then received an ACARS message asking me to contact ZZZ operations.  I explained the situation and was told that a cargo supervisor would come out.  We reiterated that we needed paperwork for the alcohol drums that had been loaded.  With departure time approaching; operations advised that since they couldn't provide us with any information about the drums marked alcohol; the drums would be pulled off of the flight.  The drums were removed and we departed ZZZ.  At no time did I refuse carriage of the cargo; just clarification of the content of the drums marked PERFLUORO ALCOHOL and proper DG notification; if required.  I still don't have clarification as to whether or not this should have been classified as DG and I applaud the F/O for being so observant.
B-737 Captain reported refusing Dangerous Goods due to incomplete Hazmat documentation.