http://cad.chp.ca.gov/
and choose San Diego (border) dispatch area.
The substance is reported to be "Inorganic Chromium", placard 3264, anybody know anything about it?
SigAlert now in effect. Highway 15 is heavily traveled at this time of the day.
Sheriffs are on the way to assist in the event evacuations are needed.
POTENTIAL HEALTH EFFECTS FOLLOWING EXPOSURE TO INORGANIC CHROMIUM
The adverse effects of chromium and its inorganic compounds vary according to valence state, water solubility and dose. However, the hexavalent chromium compounds-chromates, dichromates and chromic acid-are of most concern in both acute exposures and chronic exposure to lower concentrations.
Route of Entry into the Body
The routes of inorganic chromium entry into the body are through inhalation, ingestion and percutaneous absorption. Occupational exposure generally occurs through inhalation and dermal contact. The absorption of chromium is dependent on the valence and water-solubility of the chromium compound. Soluble forms of hexavalent chromium are readily absorbed by inhalation. Dermal absorption may also occur. Absorption of water-soluble hexavalent chromium through the gastrointestinal tract is about 10 per cent.
Probably "Corrosive liquid, acidic, inorganic, n.o.s., 8, UN 3264 PG ?, contains chromium"........ This is some form of acid with chromium, probably common to the electroplating industry. The reason it is off-gassing is because it is reacting with something. Maybe the tanker wasn't cleaned out before loading this acid and it's reacting with a previous content. Could be the problem started prior to loading it and just now showing a problem.
Probably chromic acid, CrO3, solution for plating purposes if it's in a tanker.