Material Safety Data Sheet Section 1. Identification of the substance Product Name: 7-Anilino-3-diethylamino-6-methyl fluoran Synonyms: Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section 3. Composition/information on ingredients. Ingredient name: 7-Anilino-3-diethylamino-6-methyl fluoran CAS number: 29512-49-0 Section 4. First aid measures Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing contaminated clothing and shoes. If irritation persists, seek medical attention. Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical attention. Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. Section 5. Fire fighting measures In the event of a fire involving this material, alone or in combination with other materials, use dry powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus should be worn. Section 6. Accidental release measures Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national standards. Respiratory precaution: Wear approved mask/respirator Hand precaution: Wear suitable gloves/gauntlets Skin protection: Wear suitable protective clothing Eye protection: Wear suitable eye protection Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container for disposal. See section 12. Environmental precautions: Do not allow material to enter drains or water courses. Section 7. Handling and storage Handling: This product should be handled only by, or under the close supervision of, those properly qualified in the handling and use of potentially hazardous chemicals, who should take into account the fire, health and chemical hazard data given on this sheet. Store in closed vessels, refrigerated. Storage: Section 8. Exposure Controls / Personal protection Engineering Controls: Use only in a chemical fume hood. Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. Section 9. Physical and chemical properties Appearance: Not specified Boiling point: No data No data Melting point: Flash point: No data Density: No data Molecular formula: C31H28N2O3 Molecular weight: 476.6 Section 10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, nitrogen oxides. Section 11. Toxicological information No data. Section 12. Ecological information No data. Section 13. Disposal consideration Arrange disposal as special waste, by licensed disposal company, in consultation with local waste disposal authority, in accordance with national and regional regulations. Section 14. Transportation information Non-harzardous for air and ground transportation. Section 15. Regulatory information No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302, or have known CAS numbers that exceed the threshold reporting levels established by SARA Title III, Section 313.
X-ray crystal structure analysis and atomic charges of color former and developer
摘要:
The spirocarbon C6 of colorless forms of a fluoran compound is the base of the disengagement from the bond C(sp(3))-O by the accessibility of the electrophilic H+, the phthalide ring is cleaved and this ring becomes a benzene ring D and a carboxyl group as colored forms. The crystal and molecular structures of colored forms 2-anilino-3-methyl-6-diethylamino-9-(ocarboxyphenyl) xanthene C31H29N2O3+. Cl- (1) and 2-methyl-3-anilino-7-dibutylamino-9-(o-carboxyphenyl) xanthene C35H27N2O3+. Cl- (2) complexes were determined by single-crystal X-ray diffraction analysis, The xanthene ring skeletons of colored forms 1 and 2 have planar geometries, and the ring junctions between the xanthene ring and the benzene ring D make a small angle compared to the colorless forms which are almost at right angles to the xanthene ring skeletons. 1 and 2 are just different from the ethyl and butyl groups in two side chains R-1 and R-2, but the rigid body and internal motions in molecules differ at R-1 and RS (the ring F). The charges of the root atom NI of the two side chains are increased by pi-electron densities, those from N1 to C6 atoms show distinct odd alternant system, and two oxygens (O2 and O3) of the carboxyl group are decreased. The group charges of N1 of colored forms are positive, while those of the colorless forms are negative. Colored forms make networks of X-H ... Y contacts with an anion Cl- and the anion in the nucleus of network. It is explained here that delicate positive charges of atoms N2 and O2 cause Cl ... H(N2)-N2 and Cl ... H(O2)-O2 contacts. (C) 1999 Elsevier Science B.V. All rights reserved.
A thermochromic pigment composition including compounds of formula (I):
in which: X represents CHR
2
, O, OCO or CH═CH; Y represents O, COO, or OCOO; R
1
represents H or (CH
2
)
p
CH
3
; R
2
represents phenyl or H; m=12-18; n=0-14; p=12-18; and on the condition that, if n=0, X represents CHR
2
or CH═CH.
The thermochromic pigment compositions having compounds of formula (I), include thermochromic pigment microcapsules. The thermochromic pigment capsules are useable for thermochromic pigment compositions in ink which may be used writing instruments.
Method for the biological preparation of hydroxyvitamin D compounds
申请人:Mercian Corporation
公开号:US05474923A1
公开(公告)日:1995-12-12
A method for introducing hydroxyl groups into vitamin D compound at the 1.alpha.- and/or 25-positions in the presence of a cyclodextrin compound by the use of a reaction mixture containing a microorganism being capable of hydroxylating vitamin D compound or a enzyme produced from the microorganism, is disclosed.
Solvent compositions for use in pressure-sensitive copying paper
申请人:The Wiggins Teape Group Limited
公开号:EP0520639A1
公开(公告)日:1992-12-30
A solvent composition for use in pressure-sensitive copying papers comprises a mixture of vegetable oil and a mono- or di-functional ester of a fatty acid or other acid composed of a non-aromatic saturated or unsaturated straight or branched hydrocarbon chain and a single terminal carboxyl group.