Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP·Na4)

Tetra Sodium Salt o 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP·Na4)

CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na)

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CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na) Synonyms: Tetrasodium etidronate

Hui Molekala: C₂H₄O₇P₂Ua hala₄ Kaumaha molekula: 294

Hui Pū ʻIa:

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HEDP•Na₄ ʻo ia ka paʻakai sodium o HEDP, HEDP•Na₄ He mea hoʻopaneʻe pālākiʻi maikaʻi no ka calcium carbonate, hiki ke hoʻohana ʻia i ka ʻōnaehana wai paila haʻahaʻa, ka ʻōnaehana wai kaʻapuni, ka ʻōnaehana wai hoʻomaʻemaʻe ʻoihana a me ke kūlanakauhale a me ka wai ʻauʻau.

The solid HEDP•Na₄ he pauda keʻokeʻo, hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻohana ʻia i ka hoʻoilo a me nā ʻāpana hau. He ʻano ia o ka organophorphonic acid scale a me ka corrosion inhibitor, hiki ke hana i ka paʻa paʻa me nā ion Fe, Cu a me Zn, hiki iā ia ke hoʻoheheʻe i nā oxides ma ka ʻili metala, loaʻa iā ia ka pālākiō maikaʻi a me ka hopena inhibition corrosion ma lalo o 250 ℃.

HEDP•Na₄ is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP•Na₄ is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na₄ is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na₄ hoʻohana ʻia ma ke ʻano he chelating agent.

Hōʻike:

Nā mea	Papa kuhikuhi
Ka nana aku	ʻAʻole waihoʻoluʻu i ka wai aniani ʻeleʻele	Pauda keʻokeʻo
Maʻiʻo ʻeleu (HEDP)%	20.3-21.7	60.0 min
Active content (HEDP•Na₄)%	29.0-31.0	85.0 min
Huina phosphoric acid (e like me PO₄^3-) %	18.4-20.4	55.0 min
Fe, mg/L	20.0 ka nui	35.0 ka nui
wai ，%	--	10.0 ka nui
ʻO ka mānoanoa (20 ℃)g/cm³	1.26-1.36	--
PH (1% hoʻonā wai)	10.0-12.0	11.0-12.0