tert-Butyl chromate
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CAS
1189-85-1
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[(CH3)3CO]2CrO2
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RTECS
GB2900000
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Synonyms & Trade Names
di-tert-Butyl ester of chromic acid
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: Ca TWA 0.001 mg Cr(VI)/m3 See Appendix A See Appendix C
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OSHA PEL: TWA 0.005 mg CrO3/m3 [skin] See Appendix C
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IDLH
Ca [15 mg/m3 {as Cr(VI)}]
See: 1189851
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Conversion
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Physical Description
Liquid. [Note: Solidifies at 32-23°F.]
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MW: 230.3
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BP: ?
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FRZ: 32-23°F
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Sol: ?
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VP: ?
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IP: ?
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Sp.Gr: ?
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Fl.P: ?
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UEL: ?
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LEL: ?
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Incompatibilities & Reactivities
Reducing agents, moisture, acids, alcohols, hydrazine, combustible materials
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Measurement Methods
NIOSH 7604; OSHA ID103, ID215
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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 organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, respiratory system; eye, skin burns; drowsiness, muscle weakness; skin ulcers; lung changes; [potential occupational carcinogen]
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Target Organs
Eyes, skin, respiratory system, central nervous system
Cancer Site
[lung cancer]
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See also: INTRODUCTION
See ICSC CARD: 1533
See MEDICAL TESTS: 0031
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