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Outline of GOHSENOL™

Handling Precautions

The following section provides information on danger and necessary precautions required for the use of GOHSENOL™. This information is based on published reports and data but does not contain any guaranteed values. Necessary precautions are based on the assumption that GOHSENOL™ is used for ordinary applications. In extraordinary applications, please take safety measures suitable for each case.

Chemical Classification of GOHSENOL™
Chemical name : Polyvinyl alcohol (PVOH)
General name : PVOH, PVA, or POVAL
No. of existing chemical substance : 6-682
CAS No. : 9002-89-5 (fully saponified PVOH) /25213-24-5 (partially saponified PVOH)
FDA. : Refer to the FDA listing
Hazard Information (N and G types)
Flash point : 70℃ or over (Setaflash closed cup)
Ignition point : 440℃ (Layered)
520℃ (Floated)
Combustibility : Falling under the category of non-dangerous, designated flammable goods (combustible solids) of the Fire Service Act in Japan
Dust explosiveness : Lower limit of explosion =35g/m3
Toxicological Information
Irritation : No abnormalities were observed from an insertion test of partially saponified PVOH powder in the eyes of rabbits, but a slight irritation was observed in the eyes when completely saponified PVOH powder was inserted. A slight irritation was observed from a batch test of partially saponified PVOH onto the skin of rabbits, but no abnormalities were on the skin with completely saponified PVOH powder.
Acute toxicity : More than LD50 2,000 mg/kg (oral, rat)
More than LD50 2,000 mg/kg (dermal, rat)
No rat deaths or fatal abnormalities were observed from either one of the above cases.
Subchronic toxicity : Hypertension, renal hypertrophy, liver hypertrophy, and cardiac hypertrophy were observed from rats administered with 1 ml of saline solution with 5% polyvinyl alcohol (0.9%) on a daily basis for 25 days.
Carcinogenicity : No carcinogenicity was observed from past experiments with rats.
Mutagenicity : (Microorganisms and chromosomal abnormalities) No mutagenicity was observed from a chromosome test on hamsters and minute cell nucleus test on mice.

For details, refer to the SDS of each grade product.

Analytical Results of Toxic Substances (GL-05)
Substance Results Detection Limit Analytical Methods
Pb Not detected 0.05ppm Atomic-absorption spectroscopy
Cd Not detected 0.01ppm Atomic-absorption spectroscopy
T-Hg Not detected 0.01ppm Hydride generation atomic-absorption spectroscopy
Cu Not detected 0.05ppm Atomic-absorption spectroscopy
Zn Not detected 0.05ppm Atomic-absorption spectroscopy
Mn Not detected 0.05ppm Atomic-absorption spectroscopy
Ni Not detected 0.05ppm Atomic-absorption spectroscopy
T-Cr Not detected 0.5ppm Diphenylcarbazide absorptiometry

Test organization : Japan Food Research Laboratories (April, 7,1994, No.OS57031168-001)

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