STARCH†

Chemical Identification
Chemical Identification
CAS # 9005-25-8
Formula

(C₆H₁₀O₅)n

Synonyms

corn starch; rice starch; sorghum gum; α-starch; starch gum; tapioca starch

Physical Properties
Physical Properties
Physical description Fine, white, odorless powder.
Boiling point decomposes Molecular weight varies
Freezing point/melting point decomposes Vapor pressure 0 mmHg (approx)
Flash point Vapor density
Specific gravity 1.45 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2263 (total); request using analyte code 9135 S124 (resp); request using analyte code 9130
Sampling group
Sampler/Sampling media Tared low-ash 37 mm PVC filter, 5 microns [SLTC108] Tared low-ash 37 mm PVC filter, 5 microns, preceded by 10 mm nylon Dorr-Oliver cyclone for respirable samples. [SLTC108]
Sampling time*

240-480 min

240-480 min

Sampling volume (TWA)*

960 L

816 L

Sampling flow rate (TWA)*

2 L/min

1.7 L/min ±5%

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments Gravimetric Gravimetric
Method reference OSHA PV2121 (partially validated) OSHA PV2121 (partially validated)
Notes

If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration.

If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for  the applicable component and appropriate results will be reported.

If the filter is not overloaded, samples can be collected up to an 8-hour period. If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration.

If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for  the applicable component and appropriate results will be reported.

Special requirements

FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

15 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

REL-TWA

10 mg/m³ (total), 5 mg/m³ (resp)

TLV-TWA

10 mg/m³ [1992]

PEL-TWA

10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:

as Particulates not otherwise regulated

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Starch

NIOSH: Pocket Guide to Chemical Hazards - Starch

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Starch. See annual publication for most recent information.
  • OSHA Safety and Health Information Bulletin (SHIB 07-31-2005): Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions.
  • Crippa, M. and Pasolini, G.: Allergic reaction due to glove-lubricant-powder in health-care workers. Int. Arch. Occup. Environ. Health 70(6): 399-402, 1997.
  • Dutkiewicz, J., Krysińska-Traczyk, E., Skórska, C., Cholewa, G. and Sitkowska, J.: Exposure to airborne microorganisms and endotoxin in a potato processing plant. Ann. Agric. Environ. Med. 9(2): 225-235, 2002.
  • Ewers, L.M. and Tapp, L.C.: Endotoxin exposures during potato processing. Appl. Occup. Environ. Hyg. 16(12): 1079-1087, 2001.
  • Grunewald, J., et al.: Lung accumulations of eosinophil granulocytes after exposure to cornstarch glove powder. Eur. Respir. J. 21(4): 646-651, 2003.
  • Newsom, S.W. and Shaw, M.: A survey of starch particle counts in the hospital environment in relation to the use of powdered latex gloves. Occup. Med. (Lond.) 47(3): 155-158, 1997.

Last Updated Date : 01/12/2021