Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME

NAPHTHOL AS-PH

NFPA

PRODUCT USE

Reagent. Antioxidant

SYNONYMS

C19-H17-N-O3, C19-H17-N-O3, "2-naphthalenecarboxamide, N-(2-ethoxyphenyl)-3-hydroxy-",
"2-naphthalenecarboxamide, N-(2-ethoxyphenyl)-3-hydroxy-", N-(2-ethoxyphenyl)-3-hydroxy-
2-naphthalenecarboxamide, N-(2-ethoxyphenyl)-3-hydroxy-2-naphthalenecarboxamide, "2-
naphtha-o-phenetidine, 3-hydroxy-", "2-naphtha-o-phenetidine, 3-hydroxy-", 3-hydroxy-2-
naphtho-o-phenetidine, 3-hydroxy-2-naphtho-o-phenetidine, "naphthol AS-OP", "naphthol AS-
Phenyl", "naphthol AS-Phenyl Supra", "naphthol AS-RO", "naphtoelan phenyl", "naphthol AS-
phenyl", "napthanilide phenyl", "napthanilide phenyl supra", "naphtazol OP", "naphthanil
OP", "C.I. Azoic Coupling Component 14", "C.I. 37558"

Section 2 - HAZARDS IDENTIFICATION

CANADIAN WHMIS SYMBOLS

None

EMERGENCY OVERVIEW

RISK

Very toxic to aquatic organisms, may cause long- term adverse effects in the
aquatic environment.

POTENTIAL HEALTH EFFECTS

ACUTE HEALTH EFFECTS

SWALLOWED

  The material has NOT been classified as "harmful by ingestion". This is because of the lack of corroborating animal or human evidence. The material may still be damaging to the health of the individual, following ingestion, especially where pre-existing organ (e.g. liver, kidney) damage is evident. Present definitions of harmful or toxic substances are generally based on doses producing mortality (death) rather than those producing morbidity (disease, ill-health). Gastrointestinal tract discomfort may produce nausea and vomiting. In an occupational setting however, unintentional ingestion is not thought to be cause for concern.  

EYE

  Although the material is not thought to be an irritant, direct contact with the eye may cause transient discomfort characterized by tearing or conjunctival redness (as with windburn). Slight abrasive damage may also result. The material may produce foreign body irritation in certain individuals.  

SKIN

  The material is not thought to produce adverse health effects or skin irritation following contact (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable gloves be used in an occupational setting.  Open cuts, abraded or irritated skin should not be exposed to this material.  

INHALED

  The material is not thought to produce adverse health effects or irritation of the respiratory tract (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable control measures be used in an occupational setting.  Persons with impaired respiratory function, airway diseases and conditions such as emphysema or chronic bronchitis, may incur further disability if excessive concentrations of particulate are inhaled.  

CHRONIC HEALTH EFFECTS

  There is limited evidence that, skin contact with this product is more likely to cause a sensitization reaction in some persons compared to the general population.  Long term exposure to high dust concentrations may cause changes in lung function i.e. pneumoconiosis; caused by particles less than 0.5 micron penetrating and remaining in the lung. Prime symptom is breathlessness; lung shadows show on X-ray.