장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음
특정 표적장기 독성 - 반복 노출
구분 2
경고
P260, P314, P501
예방조치문구:
P280
보호장갑/보호의/보안경/안면보호구를 착용하시오.
P302+P352
피부에 묻으면 다량의 물로 씻으시오.
P314
불편함을 느끼면 의학적인 조치·조언을 구하시오.
NFPA 704
1
2
0
황색403호의(1) C화학적 특성, 용도, 생산
화학적 성질
light yellow powder
용도
Naphthol Yellow S Hydrate is used in methods for dying of textiles.
제조 방법
4-Hydroxynaphthalene-1,3,6-trisulfonic acid or 1-Naphthol-4,7-disulfonic acid?or 1-Naphthol-2,7-disulfonic acid?or more of the latter with the nitro compounds and nitric acid reaction.
정의
ChEBI: An organic sodium salt that is the disodium salt of 5,7-dinitro-8-hydroxynaphthalene-2-sulfonic acid.
Purification Methods
It is a water-soluble greenish yellow powder. The free sulfonic acid can be recrystallised from dilute HCl (m 150o) or AcOH/EtOAc (m 148-149.5o). The disodium salt is then obtained by dissolving the acid in two equivalents of aqueous NaOH and evaporating to dryness and drying the residue in a vacuum desiccator. The sodium salt can be recrystallised from the minimum volume of H2O or from EtOH [Dermer & Dermer J Am Chem Soc 61 3302 1939]. [Beilstein 11 III 542.]
