The fire happened around 10:30 a.m. in the Dow Research & Development facility at 310 George Patterson Blvd. adjacent to Dow's Bristol Croydon Operations site.
The fire was brought under control at 1:20 p.m.
Company officials say there is no impact to the community. Some areas nearby were evacuated as a precaution.
There was also no impact on production at the facilities.
The company said all Dow personnel are accounted for.
Dow said it will conduct a full investigation into the incident.
There is no word on what sparked the fire.
No one was injured.