# NIOSH Pocket Guide to Chemical Hazards
Starch | CAS 9005-25-8
(C6H10O5)n | RTECS GM5090000
Synonyms & Trade Names Corn starch, Rice starch, Sorghum gum, alpha-Starch, Starch gum, Tapioca starch | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH N.D. | Conversion
Physical Description Fine, white, odorless powder. [Note: A carbohydrate polymer composed of 25% amylose & 75% amylpectin.]
MW: varies | BP: Decomposes | MLT: Decomposes | Sol: Insoluble
VP: 0 mmHg (approx) | IP: NA |  | Sp.Gr: 1.45
Fl.P: NA | UEL: NA | LEL: NA | MEC: 50 g/m3
Noncombustible Solid, but may form explosive mixture with air.
Incompatibilities & Reactivities Oxidizers, acids, iodine, alkalis
Measurement Methods NIOSH 0500, 0600
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: Daily Remove: When wet or contaminated Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Fresh air Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, mucous membrane; cough, chest pain; dermatitis; rhinorrhea (discharge of thin mucus)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION