長(zhǎng)期供應(yīng)藥輔羥苯丙酯 藥用級(jí)尼泊金丙酯原廠1kg 25kg現(xiàn)貨

長(zhǎng)期供應(yīng)藥輔羥苯丙酯 藥用級(jí)尼泊金丙酯原廠1kg 25kg現(xiàn)貨

長(zhǎng)期供應(yīng)藥輔羥苯丙酯 藥用級(jí)尼泊金丙酯原廠1kg 25kg現(xiàn)貨

英文同義詞: Nipasol;Nipazol;nipaginp;NipasolM;nipasolp;Parabens;Paseptol;Propagin;solbrolp;betacidep CBNumber: CB0176673

分子式: C10H12O3

分子量: 180.2用途 

1用作防腐劑及抗氧化劑，也用于制藥工業(yè)

2在藥劑、化妝品中作防腐劑

3防腐劑；抗微生物劑。羧甲基纖維素鈉

羧甲基纖維素鈉 性質(zhì)

熔點(diǎn) 274 °C (dec.)

密度 1,6 g/cm3

FEMA 2239 | CARBOXYMETHYLCELLULOSE

儲(chǔ)存條件 room temp

溶解度 H2O: 20 mg/mL, soluble

形態(tài) low viscosity

酸度系數(shù)(pKa) 4.30(at 25℃)

顏色 White to light yellow

PH值 pH (10g/l, 25℃) 6.0～8.0

水溶解性 soluble

Merck 14,1829

穩(wěn)定性 Stable. Incompatible with strong oxidizing agents.

EPA化學(xué)物質(zhì)信息 Cellulose, carboxymethyl ether, sodium salt(9004-32-4)

碳酸氫鈉

碳酸氫鈉 性質(zhì)

熔點(diǎn) >300 °C(lit.)

沸點(diǎn) 851°C

密度 2.16 g/mL at 25 °C(lit.)

折射率 1.500

儲(chǔ)存條件 2-8°C

溶解度 H2O: 1 M at 20 °C, clear, colorless

形態(tài) solution (7.5%)

顏色 White

比重 2.159

酸堿指示劑變色ph值范圍 7.8 - 8.2

PH值 8.3 (0.1molfreshly prepared)

酸度系數(shù)(pKa) (1) 6.37, (2) 10.25 (carbonic (at 25℃)

水溶解性 9 g/100 mL (20 oC)

Merck 14,8583

十二烷基硫酸鈉

十二烷基硫酸鈉 性質(zhì)

熔點(diǎn) 204-207 °C(lit.)

密度 1.03 g/mL at 20 °C

FEMA 4437 | SODIUM LAURYL SULFATE

閃點(diǎn) >100°C

儲(chǔ)存條件 Store at RT.

溶解度 H2O: 0.1 M, clear to nearly clear, colorless to slightly yellow

形態(tài) Powder or Crystals

顏色 White to pale yellow

PH值 6-9 (10g/l, H2O, 20℃)

水溶解性 ca. 150 g/L (20 oC)

波長(zhǎng)(λmax) λ: 260 nm Amax: 0.3

λ: 280 nm Amax: 0.2

Merck 14,8636

三氯叔丁醇

三氯叔丁醇 性質(zhì)

熔點(diǎn) ~78 °C

沸點(diǎn) 173 °C

密度 1.3170 (estimate)

閃點(diǎn) >110°C

儲(chǔ)存條件 -20°C

溶解度 Slightly soluble in water, very soluble in ethanol (96 per cent), soluble in glycerol (85 per cent).

穩(wěn)定性 Stable. Generates toxic fumes on combustion.

CAS 數(shù)據(jù)庫(kù) 57-15-8(CAS DataBase Reference)

NIST化學(xué)物質(zhì)信息 2-(Trichloromethyl)-2-propanol(57-15-8)

EPA化學(xué)物質(zhì)信息 2-Propanol, 1,1,1-trichloro-2-methyl-(57-15-8)

海藻酸鈉 性質(zhì)

FEMA 2014 | ALGIN (LAMINARIA SPP. AND OTHER KELPS)

儲(chǔ)存條件 Store at RT.

溶解度 Slowly soluble in water forming a viscous, colloidal solution, practically insoluble in ethanol (96 per cent).

形態(tài) powder

顏色 White to Off-white

PH值 6.0-8.0 (10mg/mL in H2O)

水溶解性 Soluble in water. Insoluble in alcohol, chloroform and ether.

敏感性 Hygroscopic

Merck 14,241

穩(wěn)定性 Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.

CAS 數(shù)據(jù)庫(kù) 9005-38-3(CAS DataBase Reference)

EPA化學(xué)物質(zhì)信息 Alginic acid, sodium salt(9005-38-3)

β-環(huán)糊精 性質(zhì)

熔點(diǎn) >260 °C (dec.)(lit.)

沸點(diǎn) 844.96°C (rough estimate)

比旋光度 [α]D25 +159～+165° (c=1, H2O) (After Drying)

密度 1.2296 (rough estimate)

折射率 1.7500 (estimate)

FEMA 4028 | BETA-CYCLODEXTRIN

儲(chǔ)存條件 +15C to +30C

溶解度 1 M NaOH: 50 mg/mL

形態(tài) powder

顏色 white

PH值 5.0-8.0 (1% in solution, Ph Eur)

旋光性 (optical activity) [α]20/D +162±3°, c = 1.5% in H2O

水溶解性 Soluble in water and ammonium hydroxide.

Merck 14,2718

BRN 78623

穩(wěn)定性 Stable. Incompatible with strong oxidizing agents.

甘油化學(xué)性質(zhì)

熔點(diǎn) : 20 °C(lit.)

沸點(diǎn) : 290 °C

密度 : 1.25 g/mL(lit.)

蒸氣密度: 3.1 (vs air)

蒸氣壓: <1 mm Hg ( 20 °C)

折射率 : n20/D 1.474(lit.)

FEMA : 2525 | GLYCEROL

閃點(diǎn) : 320 °F

儲(chǔ)存條件 : 2-8°C

溶解度 : H2O: 5 M at 20 °C, clear, colorless

酸度系數(shù)(pKa): 14.15(at 25℃)

形態(tài): Viscous Liquid

顏色: APHA: ≤10

比重: 1.265 (15/15℃)1.262

氣味 (Odor): Odorless.

PH值: 5.5-8 (25℃, 5M in H2O)

爆炸極限值(explosive limit): 2.6-11.3%(V)

苯扎氯銨 性質(zhì)

沸點(diǎn) >100°C/760mmHg

密度 0.98

儲(chǔ)存條件 2-8°C

溶解度 Very soluble in water and in ethanol (96 per cent). An aqueous solution froths copiously when shaken.

形態(tài) Viscous Solution

顏色 Clear or white to yellow, may contain yellow-white fragments

比重 0.98

穩(wěn)定性 Stable. Incompatible with strong oxidizing agents, moisture. Hygroscopic.

CAS 數(shù)據(jù)庫(kù) 8001-54-5(CAS DataBase Reference)

EPA化學(xué)物質(zhì)信息 Quaternary ammonium compounds, alkylbenzyldimethyl, chlorides(8001-54-5)

磷酸氫二鈉

磷酸氫二鈉 性質(zhì)

熔點(diǎn) 243-245 °C

密度 1.064 g/mL at 20 °C

蒸氣密度 4.9 (vs air)

FEMA 2398 | DISODIUM PHOSPHATE

儲(chǔ)存條件 Store at RT.

溶解度 H2O: 0.5 M at 20 °C, clear, colorless

形態(tài) powder

顏色 White

PH值 8.9-9.2 (25℃, 50g/L in water)

4用作食品、化妝品、等的防腐殺菌劑。

性狀 白色結(jié)晶，有特殊氣味。對(duì)羧基苯甲酸丙酯為無(wú)色細(xì)小結(jié)晶或白色結(jié)晶性粉末，幾乎無(wú)臭，稍有澀味

CAS：94-13-3

分子式：C10H12O3

分子質(zhì)量：180.20

熔點(diǎn)：96-99℃

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