NIOSH Pocket Guide to Chemical Hazards

Tellurium CAS 7783-80-4

TeF 6 RTECS WY2800000 Synonyms & Trade Names DOT ID & Guide fluoride 2195 125 Exposure NIOSH REL: TWA 0.02 ppm (0.1 mg/m 3) 3 Limits OSHA PEL: TWA 0.02 ppm (0.2 mg/m ) IDLH 1 ppm Conversion 1 ppm = 9.88 mg/m 3 Physical Description Colorless gas with a repulsive odor. MW: 241.6 BP: Sublimes FRZ: -36°F Sol: Decomposes (Sublimes) VP: >1 atm IP: ? RGasD: 8.34 Fl.P: NA UEL: NA LEL: NA Nonflammable Gas Incompatibilities & Reactivities Water [Note: Hydrolyzes slowly in water to telluric acid.] Measurement Methods NIOSH S187 (II-3) Personal Protection & Sanitation First Aid ( See procedures ) Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Breathing: Respiratory support Remove: No recommendation Change: No recommendation

Respirator Recommendations NIOSH/OSHA Up to 0.2 ppm : (APF = 10) Any supplied-air respirator Up to 0.5 ppm : (APF = 25) Any supplied-air respirator operated in a continuous-flow mode Up to 1 ppm : (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions : (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape : (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus

1 Exposure Routes inhalation Symptoms Headache; dyspnea (breathing difficulty); garlic breath; in animals: pulmonary edema Target Organs respiratory system

• Detail of 7783-80-4 • Molecular Structure:

• • Name: TELLURIUM HEXAFLUORIDE • CAS Number: 7783804 • Molecular Formula: F6Te • Molecular Weight: 241.60 • Density: g/cm 3 • Boiling Point: °Cat760mmHg • Flash Point: °C • MSDS: View • Properties: Colorless gas; repulsive odor. White solid at low temp; subl before melting. Hydrol by H 2O and aq KOH. Mp: −37.6°, bp: −38.9° (subl), d: (solid) 4.006 @ −191°, (liquid) 2.499 @ −10°. IDLH 1 ppm.

Formula: TeF6 CAS Number: 7783-80-4 : 241.5904192 g Percent Composition: Te 52.816 % F 47.183 %

2 Tellurium hexafluoride

Identifications • Formula: TeF6 Elements: , Tellurium

• CAS Number: 7783-80-4

• CCOHS Record Number: 588

• RTECS Number: WY2800000

• Synonyms/Related:

o hexafluoridotellurium

o TeF6

o Tellurium fluoride

o Tellurium fluoride (TeF6) , (OC-6-11)-

o Tellurium fluoride, (OC-6-11)-

o Tellurium Hexafluoride

o Tellurium hexafluoride [UN2195] [Poison gas]

o tellurium(6+) fluoride

o tellurium(VI) fluoride

o [TeF6]

Properties

• Incompatiblities:

o water

Health & Regulatory Guidelines

• NIOSH Guidelines:

o TWA : 0.02 ppm

o IDLH : 1 ppm

o Conversion: 1 PPM = 9.88 mg/m 3@ 25°C & 1ATM

• OSHA Regulations:

o TWA : 0.02 ppm

o TWA Vacated: 0.02 mg/m �

• Notes: Hydrolyzes slowly in water to telluric acid.

3 49 CFR 172.101 - Hazardous Materials Table

Hazardo Pack §173 Qty limit Vessel us material Ha s z Spec No Car descript cla P prov Pass ID# LC Exc n Bul go Lo Oth ion and ss G §172.1 air/r ep Bul k air c er proper or 02 ail shippin div k only g names (1 (10 (2) (3) (4) (5) (6) (7) (8A) (8B) (8C) (9A) (9B) (10B) ) A) Current as of January 2006 Telluriu 2.3 UN21 2. 1 Non 30 No Forbi Forb D 40 m 95 3, e 2 ne d id hexafluo 8 ride

2004 Emergency Response Guidebook Information Produced by the US DOT the ERG is designed to aid first responders in quickly identifying specific or generic hazards of materials involved in an incident and protecting themselves and the general public during the initial response phase of an incident.

UN# Guide Name of Material ISO H20 React TIH Gas(es) 2195 125 Tellurium hexafluoride Yes No

Isolation and Protective Action Distances Table

SMALL SPILLS LARGE SPILLS

Then Then PROTECT PROTECT First First Persons Persons ISOLATE in ISOLATE in Downwind Downwind Name of all all UN# During- During- Material Directions Directions Day Night Day Night

m ft km mi km mi m ft km mi km mi Please see: How to use the table of initial isolation and

4 Isolation and Protective Action Distances Table

SMALL SPILLS LARGE SPILLS

Then Then PROTECT PROTECT First First Persons Persons ISOLATE in ISOLATE in Downwind Downwind Name of all all UN# During- During- Material Directions Directions Day Night Day Night

m ft km mi km mi m ft km mi km mi protective action distances

5