Regulations And Advisories

Because of its potential to cause adverse health effects in exposed people, a number of regulations and guidelines have been established for boron and its compounds by various national and state agencies. These values are summarized in Table 7-1.

TABLE 7-1. Regulations and Guidelines Applicable to Boron and Compounds

Agency

Descri pti on

Informati on

References

NATIONAL Regulati ons: a . Ai r : OSHA

PEL TWA Boron oxide Total dust Respirable fraction Sodium tetraborates Cei1i ng

Boron tribromide Boron trifluoride

OSHA 1989 (29 CFR 1910.1000) Table Z-1-A

EPA OWRS

General permits under NPDES Boron, total

40 CFR 122,

Appendix D, Table IV

Food additive-modified hop extract Boron

310 ppm

21 CFR 172-560

EPA OERR

Reportable quantity (proposed) Boron trichroride

100 lbs

EPA 1989b

EPA OPP

Boron tri fluoride Extremely Hazardous Substance TPQ Boron trichloride Boron tri fluoride Tolerances for pesticide chemicals on raw agricultural commodities Boron

100 lbs

500 lbs 500 lbs

8 to 30 ppm

EPA 1987a

40 CFR 180.271

NIOSH

TLV TWA

Sodium tetraborates

Anhydrous and pentahydrate Decahydrate Boron oxide Cei1i ng

Boron tribromide Boron trifluoride IDLH

Boron trifluoride

100 ppm

ACGIH 1986

NIOSH 1985b b. Water:

EPA OWRS

Ambient Water Quality Criteria Long-term irrigation on sensitive crops

750 mg/L

EPA 1986b c. Other: EPA

Oral RfD

Boron and Borates

9E-2 mg/kg/day

IRIS 1989

STATE

Regulations and

Connecti cut

Nevada

North Dakota

Vi rgi ni a

Acceptable ambient air concentrations Sodium tetraborates

Boron oxide Boron tribromide Boron trifluoride Sodium tetraborates Boron oxide Boron tribromide Boron trifluoride Sodium tetraborates

Boron oxide Boron tribromide Boron trifluoride Sodium tetraborates Boron oxide Boron tribromide Boron trifluoride

20 mg/m3 (8 hr) 100 mg/m3 (8 hr) 200 mg/m3 (8 hr) 200 mg/m3 (8 hr) 0 mg/m3 (8 hr) 2.4E-2 mg/m3 (8 hr) 2.38E-1 mg/m3 (8 hr) 2.38E-1 mg/m3 (8 hr) 7.1F-2 mg/m3 (8 hr) 1.0E-2 mg/m3 (8 hr) 5.0E-2 mg/m3 (8 hr) 1.0E-2 mg/m3 (8 hr) 1.0E-1 mg/m3 (8 hr) 3.0E-2 mg/m3 (8 hr) 16 mg/m3 (24 hr) 160 mg/m3 (24 hr) 80 mg/m3 (24 hr) 25 mg/m3 (24 hr)

NATICH 1989

ACGIH = American Conference of Governmental Industrial Hygienists; EPA = Environmental Protection Agency; FDA =

Food and Drug Administration; IDLH = Immediately Dangerous to Life or Health Level; NIOSH = National Institute for Occupational Safety and Health; NPDES = National Pollutant Discharge

Elimination System; OERR = Office of Emergency and Remedial Response; OPP = Office of Pesticide Products; OSHA = Occupational Safety and Health Administration; OWRS = Office of Water Regulations and Standards; PEL = Permissible Exposure Limit; TLV = Threshold Limit Value; TPQ = Threshold Planning Quantity; TWA = Time-Weighted Average

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