BiChromate

A chrome pickle treatment for magnesium. Color varies from matte gray to yellow-red. Only fair corrosion resistance (less than 24 hours 20% salt spray resistance).

A dichromate treatment for magnesium. Color varies from light brown to dark brown to gray depending on alloy. Only fair corrosion resistance (less than 24 hours 20% salt spray resistance).

An electromagnetic steel sheet has an electrically insulating coating with superior weldability, formed by coating a treatment solution on the electromagnetic steel sheet and baking the same, the treatment solution containing a synthetic resin fine-particle emulsion having resistance against chromic and/or bichromic acid and exhibiting a peak temperature not lower than 400.degree. C. at which a weight change rate is maximized when a sample is heated at a constant rate in differential thermal gravimetry, a chromate and/or bichromate base aqueous solution containing at least one kind of two-valence metal, and an organic reducer. The steel sheet is superior in electrical insulation, adhesion, punching ability, weldability and corrosion resistance.

Inhalation:	Ingestion:
Inhalation produces damaging effects on the mucous membranes and upper respiratory tract. May cause ulceration and perforation of the nasal septum. Symptoms may include irritation of the nose and throat, coughing, and labored breathing. May cause lung edema, a medical emergency. May produce pulmonary sensitization or allergic asthma.	Corrosive. Swallowing can cause severe burns of the mouth, throat, and stomach, leading to death. Can cause sore throat, vomiting, diarrhea. May cause abdominal pain, dizziness, intense thirst, shock and liver damage. May be followed by circulatory collapse or toxic nephritis.