Calcium hydroxide

Manufactured by Fujifilm

Sourced in Japan

Calcium hydroxide is a chemical compound used in various laboratory applications. It is a white, crystalline solid that is soluble in water. Calcium hydroxide has a specific chemical formula of Ca(OH)2 and is commonly referred to as slaked lime or hydrated lime.

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Lab products found in correlation

1 3 butanediol, by Daicel (1 mentions) Citric acid, by Fujifilm (1 mentions) Sulfuric acid, by Kanto Chemical (1 mentions) Ammonium chloride, by Kanto Chemical (1 mentions) Hydrogen peroxide solution, by Kanto Chemical (1 mentions) Phthalic acid, by Fujifilm (1 mentions) Rint 2000, by Rigaku (1 mentions)

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Calcium hydroxide [Ca(OH)2] (3 citations)

5 protocols using calcium hydroxide

Preparation of Pigmented Polyurethane Ink

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Example 5

To 45% of the water-dispersible polyurethane resin particle (A) aqueous dispersion, 0.01% of calcium hydroxide (trade name: calcium hydroxide, manufactured by FUJIFILM Wako Pure Chemical Corporation) was added, and stirred while heating at 40° C. for 6 hours. Then, in this aqueous dispersion, 7% of cyan pigment dispersion, 15% of 1,3-butanediol (trade name: 1,3-butanediol, manufactured by DAICEL CHEMICAL INDUSTRIES, LTD.), 3-methoxy-N, 5% of N-dimethylpropionamide (trade name: EQUAMIDE M-100, manufactured by Idemitsu Kosan Co.,Ltd.), 5% of diethyleneglycol diethyl ether (trade name: Hisolve EDE, manufactured by TOHO Chemical Industry Co.,Ltd.), 5% of triethyleneglycol butyl methyl ether (trade name: Hisolve BTM, manufactured by TOHO Chemical Industry Co.,Ltd.), 1% of siloxane compound (trade name: FZ2110, manufactured by Dow Toray Co.,Ltd.), and a filling-up amount of ion-exchanged water (total amount: 100%) were mixed and stirred, and then the mixture was filtered through a membrane filter having an average pore size of 0.8 μm (DISMIC28CP, manufactured by Advantech Co., Ltd.) to obtain an ink 5.

US11130349B2. Ink, method for producing ink, method for printing, and printer (2021-09-28). RICOH COMPANY, LTD. [JP]. Inventors: Hiromi Sakaguchi [JP], Hiroshi Gotou [JP], Itsuro Sasaki [JP], Ayaka Tanaka [JP].

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Graphite Composite Fabrication Protocol

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Natural graphite powder (CFW-18AK, 18 μm nominal particle size), and UF resin were provided by Chuetsu Graphite Works (Osaka, Japan), and DIC Kitanihon Polymer (Tomakomai, Japan), respectively. According to the manufacturer, the resin has the following general physicochemical properties: 51% non-volatile solids content, 7.5 pH, 110 mPa s viscosity, and 1.2 formaldehyde/urea molar ratio. Ammonium chloride (99.5% purity), which is a curing agent, was purchased from Kanto Chemical (Tokyo, Japan). Citric acid (>99.5% purity), and calcium hydroxide (>96.0% purity) as a pH adjuster were purchased from Wako Pure Chemical Industries (Osaka, Japan), and Kanto Chemical, respectively. Sulfuric acid (96.0% concentration), potassium permanganate (99.3% purity), and hydrogen peroxide solution (34.5% concentration) for GO preparation were purchased from Kanto Chemical. All reagents were used as received without further purification.

Saito K., Hirabayashi Y, & Yamanaka S. (2021). Reduction of formaldehyde emission from urea-formaldehyde resin with a small quantity of graphene oxide. RSC Advances, 11(52), 32830-32836.

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Calcium Hydroxide Root Canal Procedure

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Calcium hydroxide (FUJIFILM Wako Pure Chemical, Osaka, Japan) was mixed with distilled water and inserted into the root canal up to about 12 mm below the cavity margin, and a dry cotton ball was inserted at least 10 mm below the cavity margin using a root canal plugger (YDM, Tokyo, Japan) equipped with a rubber stop to secure the depth. These specimens were randomly assigned to six groups (10 specimens in each), and the temporary sealing procedure was performed as below.

Kameyama A., Saito A., Haruyama A., Komada T., Sugiyama S., Takahashi T, & Muramatsu T. (2020). Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study. Materials, 13(7), 1700.

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Protamine and Calcium Hydroxide Solution Preparation

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Protamine was supplied by Maruha Nichiro Corporation (Tokyo, Japan). Protamine (0.5 g) was dissolved in 50 mL of ultrapure water (10,000 μg/mL). The solution was sterilized in an autoclave (121 °C, 20 min), diluted appropriately, and used for the various evaluation tests.
To prepare the calcium hydroxide solution, supersaturated amounts of calcium hydroxide powder (FUJIFILM Wako Pure Chemical, Osaka, Japan) were dissolved in ultrapure water. The solution was centrifuged at 8000 rpm for 10 min. The supernatant was used for evaluation tests.

Abe Y, & Honda M. (2023). A Novel Control Method of Enterococcus faecalis by Co-Treatment with Protamine and Calcium Hydroxide. Pharmaceutics, 15(6), 1629.

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Synthesis of Calcium Phthalate Crystals

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We synthesized calcium phthalate as follows. A mixture of 20 g of phthalic acid (Wako Chemicals, Osaka, Japan) and 0.89 g of calcium hydroxide (Wako Chemicals) was dissolved into 200 mL of water at 75°C. The solution was stirred for 2 h at 75°C and the solution was then cooled to 40°C. The resulting precipitates were discarded by filtering to remove the excess phthalic acid. The filtrate was cooled to room temperature. Subsequently, the precipitates were filtered and rinsed with 100°C distilled water. Phthalate was dissolved into water at 75°C and hydroxyapatite particles (Wako Chemicals) were added to synthesize calcium phthalate. Crystal phases of the specimens were identified using an XRD powder diffractometer (Rint-2000, Rigaku, Tokyo, Japan).

Ohno H., Hashimoto M., Araki Y., Nezu T, & Endo K. (2021). Chemical interaction of 4-META with enamel in resin-enamel bonds. Dental materials journal, 40(3).

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