チオ硫酸カルシウム六水和物

Liquid

(50% solution): Liquid; Soluble in water; [MSDSonline]

WHEN DRY, DECOMP ON STANDING FORMING YELLOW CRUST ON SURFACE; MORE STABLE IF KEPT DAMP & STORED BELOW 0 °C /HEXAHYDRATE/

SPONTANEOUSLY DECOMPOSES @ 43-49 °C /HEXAHYDRATE/

TRICLINIC CRYSTALS; FREELY SOL IN WATER; PRACTICALLY INSOL IN ALCOHOL; SPONTANEOUSLY DECOMPOSES @ 43-49 °C; DENSITY: 1.87 /HEXAHYDRATE/

100 G SOL IN 100 CC WATER @ 3 °C; DECOMPOSES @ MELTING POINT & IN HOT WATER /HEXAHYDRATE/

WHITE CRYSTALS; EFFLORESCES @ 40 °C /SRP: BECOMES POWDERY IN CONSEQUENCE OF LOSING THE WATER OF CRYSTALLIZATION/ /HEXAHYDRATE/

When dry, decomposes on standing forming a yellow crust on surface /hexahydrate/

This chemical does not meet GHS hazard criteria for 100% (3 of 3) of all reports.

Not Classified

Aggregated GHS information provided per 3 reports by companies from 1 notifications to the ECHA C&L Inventory.

Chemical: Thiosulfuric acid (H2S2O3), calcium salt (1:1)

Thiosulfuric acid (H2S2O3), calcium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Thiosulfuric acid (H2S2O3), calcium salt (1:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.

REACH registered substance: Calcium thiosulphate (EC: 233-333-7)

Calcium thiosulfate: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

The oral lethal dose for humans of thiosulfate salts is probably 0.5-5 g/kg; Sodium thiosulfate is toxic by ingestion causing gastrointestinal disturbance; [HSDB] May cause irritation; Intraperitoneal LD50 (mouse) = 115 mg/kg; [MSDSonline] See Ammonium thiosulfate. See Calcium.

Manufacturers, packers, and distributors of drug and drug products for human use are responsible for complying with the labeling, certification, and usage requirements as prescribed by the Federal Food, Drug, and Cosmetic Act, as amended (secs 201-902, 52 Stat. 1040 et seq., as amended; 21 U.S.C. 321-392).

As the federal pesticide law FIFRA directs, EPA is conducting a comprehensive review of older pesticides to consider their health and environmental effects and make decisions about their future use. Under this pesticide reregistration program, EPA examines health and safety data for pesticide active ingredients initially registered before November 1, 1984, and determines whether they are eligible for reregistration. In addition, all pesticides must meet the new safety standard of the Food Quality Protection Act of 1996. Pesticides for which EPA had not issued Registration Standards prior to the effective date of FIFRA, as amended in 1988, were divided into three lists based upon their potential for human exposure and other factors, with List B containing pesticides of greater concern and List D pesticides of less concern. Calcium thiosulfate is found on List D. Case No: 4057; Pesticide type: insecticide, fungicide, herbicide; Case Status: None of the active ingredients in the case are being supported for reregistration by their registrants. All are unsupported, or some are unsupported and some are cancelled. Cases described as "unsupported" generally are being processed for cancellation.; Active ingredient (AI): Calcium thiosulfate; Data Call-in (DCI) Date(s): 10/13/95; AI Status: Registrants of the pesticide have not made or honored a commitment to seek reregistration, conduct the necessary studies, or pay the requisite fees, or they have asked EPA to cancel their product registrations. Unless some other interested party supports them, products containing the pesticide will be cancelled.

Used as a fungicide, noncorrosive concrete-set accelerator, and polymerization catalyst; Was used in the treatment of arsphenamine side effects; [HSDB]

Farming (Pesticides) [Category: Industry]

MEDICATION: IN DERMATITIS & JAUNDICE DUE TO ARSPHENAMINE

IN SULFUR FUNGICIDES

As a component of the fungicide and insecticide lime sulfur (ca 5% calcium thiosulfate) used as standard dormant spray for control of the San Jose scale (Aspidiotus perniciosus) and for other scales and various plant diseases

Fungicide formualtions, a noncorrosive concrete-set accelerator, and a catalyst for polyolefin mfg

BALLEZO, KAUFMANN, MONATSH 80, 220 (1949); LEVENSON, US PATENT 2,763,531 (1956 TO KODAK).

Has been prepared from calcium sulfite and sulfur at 30-40 °C, or from boiling lime and sulfur in the presence of sulfur dioxide...alternatively, a concn solution of sodium thiosulfate is reacted with calcium chloride...concn solutions of calcium thiosulfate are prepared from ammonium thiosulfate and lime