ANTU

Synonyms & Trade Names

α-Naphthyl thiocarbamide, 1-Naphthyl thiourea, α-Naphthyl thiourea

CAS No.

86-88-4

RTECS No.

YT9275000

DOT ID & Guide

1651 153

Formula

C₁₀H₇NHC(NH₂)S

Conversion

IDLH

100 mg/m³
See: 86884

Exposure Limits

NIOSH REL

TWA 0.3 mg/m³

OSHA PEL

TWA 0.3 mg/m³

Measurement Methods

NIOSH S276 (II-5)
See: NMAM or OSHA Methods

Physical Description

White crystalline or gray, odorless powder. [rodenticide]

Molecular Weight

202.3

Boiling Point

Decomposes

Melting Point

388°F

Solubility

0.06%

Vapor Pressure

Low

Ionization Potential

Specific Gravity

Flash Point

Upper Explosive Limit

Lower Explosive Limit

Noncombustible Solid

Incompatibilities & Reactivities

Strong oxidizers, silver nitrate

Exposure Routes

inhalation, ingestion

Symptoms

After ingestion of large doses: vomiting, dyspnea (breathing difficulty), cyanosis, coarse pulmonary rales; liver damage

Target Organs

respiratory system, blood, liver

Personal Protection/Sanitation

(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:No recommendation
Remove:No recommendation
Change:Daily

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 3 mg/m³:
(APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100.
Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator

Up to 7.5 mg/m³:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate filter.

Up to 15 mg/m³:
(APF = 50) Any air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
(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.
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s) in combination with a high-efficiency particulate filter
(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

Up to 100 mg/m³:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode

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 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

ANTU

NIOSH REL

OSHA PEL

Follow NIOSH

NIOSH Homepage