Detail of "1655-35-2"

CAS Number:
1655-35-2
Name:
2,7-Naphthalenedisulfonic acid disodium salt
Molecular Structure:
Formula:
C₁₀H₆Na₂O₆S₂
Molecular Weight:
332.25
Synonyms:
2,7-Naphthalenedisulfonicacid, disodium salt (8CI,9CI);2,7-Disulfonaphthalene disodium salt;Disodium2,7-naphthalenedisulfonate;Sodium 3,6-naphthalenedisulfonate;
EINECS:
216-733-6
Density:
1.704 g/cm³
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-37/39 Details

Supplier Location
Supplier Location
- China (Mainland)(20)
- United States(2)
- Denmark(1)
- India(1)
Business Type
Business Type
- Lab/Research institutions(1)
- Manufacturers(1)
- Trading Company(15)
Certificates
Certificates
- ISO(1)
- Production License (0)

Display：

Please post your buying leads,so that our qualified suppliers will soon contact you!
*Required Fields

Diazo copying process: Diazo copying process. (Ricoh Co.Some chemicals with cas registry numbers like 1655-35-2 and 88878-53-9 are also used., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 57186751 A2 17 Nov 1982 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: G03C005-34. ICA: G03C001-52. APPLICATION: JP 81-71771 13 May 1981. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) A 2-component diazo copying paper contg. diazo compds. of the formula I (R = C1-4 alkyl; R1, R2 = alkyl, hydroxyalkyl, cycloalkyl, aralkyl; R1R2 in combination may complete a hterocyclic ring; X = anion) is developed by using 35 g/m2 of a developer contg. an alk. substance, a polyhydric alc. (or its ether), and thiourea dioxide (or its deriv.). Thus, a 2-component diazo copying paper contg. citric acid, caffeine, di-Na naphthalene-2,7-disulfonate, ZnCl2, N-(3-dimethylaminopropyl)-2-hydroxy-3-naphthamide hydrochloride, 4-morpholino-2,5-diethoxybenzenediazonium chloride zinc chloride and saponin was imagewise exposed and developed with a developer contg. monoethanolamine, ethylene glycol, diethylene glycol monoethyl ether, and thiourea dioxide to give a high-quality copy with good light fastness. .