Barium metaborate

Synonyms

BBO (optical crystal); Barium borate; Barium boron oxide; Barium diborate; Busan 11M1; Barium diboron tetraoxide; Boric acid (HBO2), barium salt; [ChemIDplus] UN1564

Category

Preservatives

Description

White odorless solid; [Reference #1] White odorless powder; Water solubility = 0.3-0.4% at 25 deg C; [Polymer Logistics MSDS] Soluble in water; [MSDSonline]

Sources/Uses

Used as a preservative for latex/oil/varnish paints, paper and paper products, adhesives, coatings, and wet-end additives/industrial processing chemicals; [Reference #1]

Comments

Causes acute pulmonary edema, cardiomyopathy, changes in trachea or bronchi, and changes to the liver in lethal-dose intratracheal studies of rats; Causes cardiac changes and changes in liver and kidney weights in mice and muscle weakness and coma in rats (oral administration); [RTECS] May cause eye, mucous membrane, and lung irritation; Not known to be a skin irritant; Prolonged inhalation exposure may cause bronchitis and pneumonia; Prolonged exposure may cause adverse effects to the cardiovascular system; Solubility in water high enough to produce symptoms of barium poisoning; [Polymer Logistics MSDS] See "Barium."

Reference Link #1

Biomedical References

0.5 mg/m3, as Ba

0.5 mg/m3, as Ba

0.5 mg/m3, as Ba, inhalable fraction (soluble compds)

50 mg/m3, as Ba

8.1E-07 mm Hg

LC50 (rat) > 3,540 mg/m3

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Barium compound, n.o.s."

Processes

Industrial Processes with risk of exposure:

• Painting (Pigments, Binders, and Biocides)
• Pulp and Paper Processing
• Working with Glues and Adhesives